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Home Page Flashcards Diethyl ether C4H10O structure - Flashcards

Diethyl ether C4H10O structure – Flashcards

Flashcard maker : Lesly Lloyd

Molecular Formula C4H10O
Average mass 74.122 Da
Density 0.7±0.1 g/cm3
Boiling Point 33.2±3.0 °C at 760 mmHg
Flash Point -40.0±0.0 °C
Molar Refractivity 22.3±0.3 cm3
Polarizability 8.9±0.5 10-24cm3
Surface Tension 19.1±3.0 dyne/cm
Molar Volume 100.9±3.0 cm3
  • Experimental data
  • Predicted – ACD/Labs
  • Predicted – EPISuite
  • Predicted – ChemAxon
  • Experimental Physico-chemical Properties

    • Experimental Melting Point:

      -116 °C TCI D3479
      -116 °C Alfa Aesar
      -116 °C Oxford University Chemical Safety Data (No longer updated) More details
      -116.3 °C Jean-Claude Bradley Open Melting Point Dataset 21939
      -116 °C Jean-Claude Bradley Open Melting Point Dataset 13163, 15719, 6838
      -116 °C Alfa Aesar 16767, 33224, 38990, 40976
      0.713 °C LabNetwork LN00164365

    • Experimental Boiling Point:

      34.6 °C Alfa Aesar
      94 F (34.4444 °C)
      NIOSH KI5775000
      34.6 °C Oxford University Chemical Safety Data (No longer updated) More details
      34.6 °C Alfa Aesar 16767, 33224, 38990, 40976

    • Experimental Ionization Potent:

      9.53 Ev NIOSH KI5775000

    • Experimental Vapor Pressure:

      440 mmHg NIOSH KI5775000

    • Experimental Flash Point:

      -49 F (-45 °C)
      NIOSH KI5775000
      -40 °C Oxford University Chemical Safety Data (No longer updated) More details
      -45 °C Alfa Aesar
      -45 °F (-42.7778 °C)
      Alfa Aesar 16767, 33224, 38990, 40976
      -45 °C LabNetwork LN00164365

    • Experimental Freezing Point:

      -177 F (-116.1111 °C)
      NIOSH KI5775000

    • Experimental Gravity:

      0.713 g/mL Alfa Aesar 16767, 33224, 38990, 40976

    • Experimental Solubility:

      8% NIOSH KI5775000
      Soluble in H2SO4. Sparingly soluble in water. Miscible in most organic solvents Alfa Aesar 33224
  • Predicted Physico-chemical Properties

    • Predicted Melting Point:

      -116 °C TCI
      -116 °C TCI D3479
  • Miscellaneous

    • Appearance:

      Colorless liquid with a pungent, sweetish odor. [Note: A gas above 94F.] NIOSH KI5775000
      colourless liquid Oxford University Chemical Safety Data (No longer updated) More details

    • Stability:

      Stable, but light-sensitive, sensitive to air. May contain BHT (2,6-di-tert-butyl-4-methylphenol) as a stabilizer.Substances to be avoided include zinc, halogens,halogen-halogen compounds, nonmetals,
      nonmetallic oxyhalides, strongoxidizing agents, chromyl chloride, turpentine oils, turps substitutes,nitrates, metallic chlorides. Extremely flammable. This material is a serious fire and explosion ri
      sk.Vapour may travel considerable distances to ignition sources, whichneed not be an open flame, but may be a hot plate, steam pipe, etc. Vapour maybe ignited by the static electricty which can build
      up when etheris being poured from one vessel into another. If large quantities ofmaterial are being poured, suitable precautions must be taken.May form explosive peroxides on storage. Peroxides are g
      enerally higher-boilingthan the materials from which they form. Consequently, if a peroxide-containingsolution is heated, the residue becomes progressively more concentrated inperoxide and the risk of
      explosion increases rapidly. Vapour-air mixture explosive (note wide explosion limits). As at 6.11.97 regulated in theUK under the Highly Flammable Liquids and Liquefied PetroleumGases Regulations 19
      72. Oxford University Chemical Safety Data (No longer updated) More details

    • Toxicity:

      ORL-RAT LD50 1215 mg kg-1 Oxford University Chemical Safety Data (No longer updated) More details

    • Safety:

      12-19-22-66-67 Alfa Aesar 16767, 33224, 38990, 40976
      3 Alfa Aesar 16767, 33224, 38990, 40976
      9-16-29-33 Alfa Aesar 16767, 33224, 38990, 40976
      Danger Alfa Aesar 16767, 33224, 38990, 40976
      DANGER: FLAMMABLE; Causes CNS effects; irritates skin, lungs Alfa Aesar 16767, 33224, 38990, 40976
      H224-EUH019-H302-H336-EUH066 Alfa Aesar 33224
      H224-H302-H336-EUH019-EUH066 Alfa Aesar 16767, 33224, 38990, 40976
      P210-P261-P280-P303+P361+P353-P405-P501a Alfa Aesar 16767, 33224, 38990, 40976
      Safety glasses. Good ventilation. Ensure sources of ignition are kept well away. Oxford University Chemical Safety Data (No longer updated) More details

    • First-Aid:

      Eye: Irrigate immediately Skin: Water wash promptly Breathing: Respiratory support Swallow: Medical attention immediately NIOSH KI5775000

    • Exposure Routes:

      inhalation, ingestion, skin and/or eye contact NIOSH KI5775000

    • Symptoms:

      Irritation eyes, skin, upper respiratory system; dizziness, drowsiness, headache, excited, narcosis; nausea, vomiting NIOSH KI5775000

    • Target Organs:

      Eyes, skin, respiratory system, central nervous system NIOSH KI5775000

    • Incompatibility:

      Strong oxidizers, halogens, sulfur, sulfur compounds [Note: Tends to form explosive peroxides under influence of air and light.] NIOSH KI5775000

    • Personal Protection:

      Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: No recommendation Remove: When wet (flammable) Change: No recommendation NIOSH KI5775000

    • Exposure Limits:

      NIOSH REL : See Appendix D OSHA PEL ?: TWA 400 ppm (1200 mg/m 3 ) NIOSH KI5775000
  • Gas Chromatography

    • Retention Index (Kovats):

      495 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column type: Packed; Start T: 403 K; CAS no: 60297; Active phase: OV-1; Carrier gas: He or N2; Substrate: Gas-Chrom Q; Data type: Kovats RI; Authors: Gurevich, K.B.; Roshchina, T.M., G as chromatography study of silica modified with polyfluoroalkyl groups, J. Chromatogr. A, 1008, 2003, 97-103.) NIST Spectra mainlib_229016, replib_19182, replib_61549, replib_374238, replib_379581, nist ri
      496 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column length: 2 m; Column type: Packed; Start T: 100 C; CAS no: 60297; Active phase: SE-30; Substrate: Gaschrom Q; Data type: Kovats RI; Authors: Winskowski, J., Gaschromatographische Identifizierung von Stoffen anhand von Indexziffem und unterschiedlichen Detektoren, Chromatographia, 17(3), 1983, 160-165.) NIST Spectra nist ri
      478 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 6 m; Column type: Packed; Start T: 50 C; CAS no: 60297; Active phase: Squalane; Carrier gas: N2; Substrate: Chromosorb W-AM; Data type: Kovats RI; Authors: Becerra, M.R.; Sanchez, E.F.; Dominguez, J.A.G.; Munoz, J.G.; Molera, M.J., The use of gaseous and liquid n-paraffins in GC identification of oxidation products of acetondimethyl acetal, J. Chromatogr. Sci., 20, 1982, 363-366.) NIST Spectra nist ri
      486 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 200 C; CAS no: 60297; Active phase: Porapack Q; Carrier gas: N2; Data type: Kovats RI; Authors: Goebel, K.-J., Gaschromatographische Identifizierung Niedrig Siedender Substanzen Mittels Retentionsindices und Rechnerhilfe, J. Chromatogr., 235, 1982, 119-127.) NIST Spectra nist ri
      471 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 160 C; CAS no: 60297; Active phase: Apiezon L; Substrate: Celite 545; Data type: Kovats RI; Authors: Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192.) NIST Spectra nist ri
      473 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 120 C; CAS no: 60297; Active phase: Apiezon L; Substrate: Celite 545; Data type: Kovats RI; Authors: Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192.) NIST Spectra nist ri
      476 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 2.1 m; Column type: Packed; Start T: 130 C; CAS no: 60297; Active phase: Apiezon M; Carrier gas: N2; Substrate: Chromosorb W; Data type: Kovats RI; Authors: Golovnya, R.V.; Garbuzov, V.G., Effect of heteroatom in aliphatic sulfur- and oxygen-containing compounds on the values of the retention indices in gas chromatography, Izv. Akad. Nauk SSSR Ser. Khim., 7, 1974, 1519-1521, In original 1599-1601., Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 2.25 m; Column type: Packed; Start T: 70 C; CAS no: 60297; Active phase: Apiezon L; Substrate: Celite; Data type: Kovats RI; Authors: Wehrli, A.; Kovats, E., Gas-chromatographische Charakterisierung ogranischer Verbindungen. Teil 3: Berechnung der Retentionsindices aliphatischer, alicyclischer und aromatischer Verbindungen, Helv. Chim. Acta, 7, 1959, 2709-2736., Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 70 C; CAS no: 60297; Active phase: Apiezon L; Data type: Kovats RI; Authors: Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S., Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192.) NIST Spectra nist ri
      470.7 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 2.4 m; Column type: Packed; Start T: 130 C; CAS no: 60297; Active phase: Apolane; Carrier gas: He; Substrate: Chromosorb; Data type: Kovats RI; Authors: Riedo, F.; Fritz, D.; Tarjan, G.; Kovats, E.Sz., A tailor-made C87 hydrocarbon as a possible non-polar standard stationary phase for gas chromatography, J. Chromatogr., 126, 1976, 63-83.) NIST Spectra nist ri
      482.6 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 2.4 m; Column type: Packed; Start T: 70 C; CAS no: 60297; Active phase: Apolane; Carrier gas: He; Substrate: Chromosorb; Data type: Kovats RI; Authors: Riedo, F.; Fritz, D.; Tarjan, G.; Kovats, E.Sz., A tailor-made C87 hydrocarbon as a possible non-polar standard stationary phase for gas chromatography, J. Chromatogr., 126, 1976, 63-83.) NIST Spectra nist ri
      474 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 50 C; CAS no: 60297; Active phase: Squalane; Carrier gas: N2; Data type: Kovats RI; Authors: Vernon, F., An investigation into hydrogen bonding in gas-liquid chromatography, J. Chromatogr., 63, 1971, 249-257.) NIST Spectra nist ri
      480 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 90 C; CAS no: 60297; Active phase: Silicon High Vacuum Grease (obsolete); Carrier gas: H2; Data type: Kovats RI; Authors: Jonas, J.; Janak, J.; Kratochvil, M., Structural investigations with the aid of Kovats retention index system on one (nonpolar) stationary phase, J. Gas Chromatogr., , 1966, 332-335.) NIST Spectra nist ri
      484 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 2.25 m; Column type: Packed; Start T: 130 C; CAS no: 60297; Active phase: Apiezon L; Substrate: Celite; Data type: Kovats RI; Authors: Wehrli, A.; Kovats, E., Gas-chromatographische Charakterisierung ogranischer Verbindungen. Teil 3: Berechnung der Retentionsindices aliphatischer, alicyclischer und aromatischer Verbindungen, Helv. Chim. Acta, 7, 1959, 2709-2736.) NIST Spectra nist ri
      576 (Program type: Ramp; Column cl… (show more) ass: Standard polar; Column diameter: 0.2 mm; Column length: 25 m; Column type: Capillary; Heat rate: 4 K/min; Start T: 50 C; End T: 200 C; Start time: 5 min; CAS no: 60297; Active phase: CBP-20; Carrier gas: He; Phase thickness: 0.25 um; Data type: Kovats RI; Authors: Shimadzu, Gas chromatography analysis of organic solvents using capillary columns (No. 2), 2003.) NIST Spectra nist ri
      630 (Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 2 m; Column type: Packed; Start T: 75 C; CAS no: 60297; Active phase: Carbowax 20M; Carrier gas: N2; Substrate: Kieselgur (60-100 mesh); Data type: Kovats RI; Authors: Goebel, K.-J., Gaschromatographische Identifizierung Niedrig Siedender Substanzen Mittels Retentionsindices und Rechnerhilfe, J. Chromatogr., 235, 1982, 119-127.) NIST Spectra nist ri
      567 (Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 180 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63., Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 200 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63.) NIST Spectra nist ri
      570 (Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 150 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63., Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 179 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63.) NIST Spectra nist ri
      577 (Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 120 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63., Program type: Isothermal; Col… (show more) umn class: Standard polar; Column length: 3 m; Column type: Packed; Start T: 152 C; CAS no: 60297; Active phase: PEG-2000; Carrier gas: He; Substrate: Celite 545 (44-60 mesh); Data type: Kovats RI; Authors: Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., , 1973, 51-63.) NIST Spectra nist ri

    • Retention Index (Normal Alkane):

      503.3 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column length: 30 m; Column type: Capillary; Heat rate: 10 K/min; Start T: 40 C; End T: 260 C; Start time: 5 min; CAS no: 60297; Active phase: DB-1; Carrier gas: He; Phase thickness: 3 um; Data type: Normal alkane RI; Authors: J&W Scientific, Solvent Retention Data, 2003.) NIST Spectra nist ri
      500 (Program type: Isothermal; Col… (show more) umn class: Standard non-polar; Column diameter: 0.32 mm; Column length: 60 m; Column type: Capillary; Start T: 60 C; CAS no: 60297; Active phase: DB-1; Carrier gas: He; Phase thickness: 1 um; Data type: Normal alkane RI; Authors: Shimadzu, Gas chromatography analysis of organic solvents using capillary columns (No. 3), 2003.) NIST Spectra nist ri
      484 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 60297; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Du, X., Quantitative structure-property relationship study on analysis of retention index of organic compound in gas chromatography, Chemical World (Chinese), 42(8), 2001, 403-406.) NIST Spectra nist ri
      501.5 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.53 mm; Column type: Capillary; Heat rate: 4 K/min; Start T: 35 C; End T: 220 C; End time: 2 min; Start time: 10 min; CAS no: 60297; Active phase: RTX-1; Carrier gas: He; Phase thickness: 3 um; Data type: Normal alkane RI; Authors: Restek, Restek International, 1999 Product Guide, 1(1), 1999, 578-591, In original 578-591.) NIST Spectra nist ri
      499 (Program type: Complex; Column… (show more) class: Standard non-polar; Column diameter: 0.53 mm; Column length: 60 m; Column type: Capillary; Description: 40C(6min)=>5C/min=>80C=>10C/min=>200C; CAS no: 60297; Active phase: SPB-1; Carrier gas: He; Phase thickness: 5 um; Data type: Normal alkane RI; Authors: Flanagan, R.J.; Streete, P.J.; Ramsey, J.D., Volatile Substance Abuse, UNODC Technical Series, No 5, United Nations, Office on Drugs and Crime, Vienna International Centre, PO Box 500, A-1400 Vienna, Austria, 1997, 56.) NIST Spectra nist ri
      485 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.20 mm; Column length: 25 m; Column type: Capillary; Heat rate: 5 K/min; Start T: 40 C; End T: 270 C; End time: 15 min; Start time: 1 min; CAS no: 60297; Active phase: DB-5; Carrier gas: Helium; Phase thickness: 0.33 um; Data type: Normal alkane RI; Authors: Savel’eva, E.I.; Zenkevich, I.G.; Radilov, A.S., Identification the Products of Chemical Neutralization of O-Isobutyl-S-(2-diethylaminoethyl)methylthiophosphonate in the Composition of Bitumen-Salt Matrices, Zh. Anal. Khim. (Rus.), 58(2), 2003, 135-145, In original 135-145., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 60297; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Zenkevich, I.G., Influence of the Variations of Dynamics Molecular Parameterts on the Additivity of Chromatigraphic Retention Indices of Products of Organic Reactions Relative to Initial Reagents, Dokl. Akad. Nauk (Rus.), 353(5), 1997, 625-627, In original 625-627., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 60297; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Zenkevich, I.G.; Chupalov, A.A.; Herzschuh, R., Correlation of the Increments of Gas Chromatographic Retention Indices with the Differences of Innermolecular Energies of Reagents and Products of Chemical Reactions, Zh. Org. Khim. (Rus.), 32(11), 1996, 1685-1691, In original 1685-1691.) NIST Spectra nist ri
      470 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; CAS no: 60297; Active phase: DB-1; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Kawai, T.; Ishida, Y.; Kakiuchi, H.; Ikeda, N.; Higashida, T.; Nakamura, S., Flavor components of dried squid, J. Agric. Food Chem., 39(4), 1991, 770-777.) NIST Spectra nist ri
      477 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; CAS no: 60297; Active phase: DB-1; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Kawai, T.; Ishida, Y.; Kakiuchi, H.; Ikeda, N.; Higashida, T.; Nakamura, S., Flavor components of dried squid, J. Agric. Food Chem., 39(4), 1991, 770-777.) NIST Spectra nist ri
      504 (Program type: Complex; Column… (show more) class: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 40 m; Column type: Capillary; Description: 30 0C (1 min) ^ 15 0C/min -; 45 0C ^ 3 0C/min -; 120 0C; CAS no: 60297; Active phase: CP Sil 8 CB; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Weller, J.-P.; Wolf, M., Massenspektroskopie und Headspace-GC, Beitr. Gerichtl. Med., 47, 1989, 525-532., Program type: Complex; Column… (show more) class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Description: 40C(10min)=; 5C/min =; 200C =;20C/min =;250C (5min); CAS no: 60297; Active phase: DB-5; Phase thickness: 1.05 um; Data type: Normal alkane RI; Authors: Garcia-Estaban, M.; Ansorena, D.; Astiasaran, I.; Ruiz, J., Study of the effect of different fiber coatings and extraction conditions on dry cured ham volatile compounds extracted by solid-phase microextraction (SPME), Talanta, 64, 2004, 458-466., Program type: Complex; Column… (show more) class: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Description: 40C(10min)=;5C/min=;200C=;20C/min=;250C(5min); CAS no: 60297; Active phase: HP-5; Phase thickness: 1.05 um; Data type: Normal alkane RI; Authors: Garcia-Estaban, M.; Ansorena, D.; Astiasaran, I.; Martin, D.; Ruiz, J., Comparison of simultaneous distillation extraction (SDE) and solid-phase microextraction (SPME) for the analysis of volatile compounds in dry-cured ham, J. Sci. Food Agric., 84, 2004, 1364-1370., Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.32 mm; Column length: 50 m; Column type: Capillary; Heat rate: 3 K/min; Start T: 0 C; End T: 250 C; CAS no: 60297; Active phase: DB-1; Data type: Normal alkane RI; Authors: Habu, T.; Flath, R.A.; Mon, T.R.; Morton, J.F., Volatile components of Rooibos tea (Aspalathus linearis), J. Agric. Food Chem., 33(2), 1985, 249-254.) NIST Spectra nist ri
      515 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 60297; Active phase: OV-1; Data type: Normal alkane RI; Authors: Ramsey, J.D.; Flanagan, R.J., Detection and Identification of Volatile Organic Compounds in Blood by Headspace Gas Chromatography as an Aid to the Diagnosis of Solvent Abuse, J. Chromatogr., 240, 1982, 423-444.) NIST Spectra nist ri
      501.4 (Program type: Ramp; Column cl… (show more) ass: Standard non-polar; Column diameter: 0.03 in; Column length: 1000 ft; Column type: Capillary; Heat rate: 4 K/min; Start T: 80 C; End T: 225 C; Start time: 5 min; CAS no: 60297; Active phase: SF-96; Data type: Normal alkane RI; Authors: Mussinan, C.J.; Walradt, J.P., Volatile constituents of pressure cooked pork liver, J. Agric. Food Chem., 22(5), 1974, 827-831.) NIST Spectra nist ri
      503.9 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.32 mm; Column length: 25 m; Column type: Capillary; Heat rate: 15 K/min; Start T: 30 C; End T: 250 C; End time: 5 min; Start time: 2 min; CAS no: 60297; Active phase: PoraPLOT; Carrier gas: He; Data type: Normal alkane RI; Authors: Ojanpera, I.; Pihlainen, K.; Vuori, E., Identification limits for volatile organic compounds in the blood by purge-and-trap GC/FTIR, J. Anal. Toxicol., 22, 1998, 290-295.) NIST Spectra nist ri
      509.1 (Program type: Ramp; Column cl… (show more) ass: Semi-standard non-polar; Column diameter: 0.25 mm; Column length: 30 m; Column type: Capillary; CAS no: 60297; Active phase: RTX-5; Carrier gas: He; Phase thickness: 0.25 um; Data type: Normal alkane RI; Authors: Wentworth, W.E.; Helias, N.; Zlatkis, A.; Chen, E.C.M.; Stearns, S.D., Multiple detector responses for gas chromatography peak identification, J. Chromatogr. A, 795, 1998, 319-347.) NIST Spectra nist ri
      493 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 1.5 m; Column type: Packed; Start T: 150 C; CAS no: 60297; Active phase: Synachrom; Carrier gas: Helium; Substrate: Synachrom (60-80 mesh); Data type: Normal alkane RI; Authors: Dufka, O.; Malinsky, J.; Vladyka, J., Sorpcni materialy pro plynovou chromatographii – III, Chemicky promysl., 21/46(9), 1971, 459-463.) NIST Spectra nist ri
      494 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column length: 1.5 m; Column type: Packed; Start T: 150 C; CAS no: 60297; Active phase: Synachrom; Carrier gas: Helium; Substrate: Synachrom (60-80 mesh); Data type: Normal alkane RI; Authors: Dufka, O.; Malinsky, J.; Vladyka, J., Sorpcni materialy pro plynovou chromatographii – III, Chemicky promysl., 21/46(9), 1971, 459-463.) NIST Spectra nist ri
      464 (Program type: Isothermal; Col… (show more) umn class: Semi-standard non-polar; Column type: Packed; Start T: 100 C; CAS no: 60297; Active phase: Squalane; Carrier gas: N2; Data type: Normal alkane RI; Authors: Vernon, F., An investigation into hydrogen bondi

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      Question
      What is the right structure for an essay
      Answer
      A paragraph is a related group of sentences that develops one main idea. Each paragraph in the body of the essay should contain:
      • a topic sentence that states the main or controlling idea
      • supporting sentences to explain and develop the point you’re making
      • evidence from your reading or an example from the subject area that supports your point
      • analysis of the implication/significance/impact of the evidence finished off with a critical conclusion you have drawn from the evidence.