Formaldehyde
- Formula: CH2O
- Molecular weight: 30.0260
- IUPAC Standard InChI: InChI=1S/CH2O/c1-2/h1H2
- IUPAC Standard InChIKey: WSFSSNUMVMOOMR-UHFFFAOYSA-N
- CAS Registry Number: 50-00-0
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- Other names: Methanal; BFV; Fannoform; Formaldehyde, gas; Formalin; Formalith; Formic aldehyde; Formol; Fyde; Lysoform; Methyl aldehyde; Methylene oxide; Morbicid; Oxomethane; Oxymethylene; Paraform; Superlysoform; Karsan; Methaldehyde; Aldehyde formique; Aldeide formica; Formaldehyd; Formalin-loesungen; Formalina; Formaline; NCI-C02799; Oplossingen; Aldehyd mravenci; Formalin 40; Rcra waste number U122; UN 1198; UN 2209; H2CO; Durine; Hercules 37M6-8; CH2O; NSC 298885; Fordor
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IR Spectrum
Go To: Top, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, References, Notes
Data compiled by: Coblentz Society, Inc.
- GAS (HEATING PARAFORMALDEHYDE; CONCENTRATION UNKNOWN); PERKIN-ELMER 297; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
- SOLUTION (UNKNOWN CONCENTRATION IN CCl4) VS. CCl4; PERKIN-ELMER 297; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm-1 resolution
Mass spectrum (electron ionization)
Go To: Top, IR Spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
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Due to licensing restrictions, this spectrum cannot be downloaded.
| Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
|---|---|
| Origin | H.M.B.BALLSCHMIETER NAT. FOOD RES. INST., PRETORIA, S AFRIC |
| NIST MS number | 37883 |
Vibrational and/or electronic energy levels
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Gas Chromatography, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Takehiko Shimanouchi
Symmetry: C2ν Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | CH2 s-str | 2783 | A | 2782.5 S | gas | 2781.6 S | liq. | ||
| a1 | 2 | CO str | 1746 | A | 1746.1 VS | gas | 1742.3 W | liq. | ||
| a1 | 3 | CH2 scis | 1500 | A | 1500.1 S | gas | 1499.7 M | liq. | ||
| b1 | 4 | CH2 a-str | 2843 | A | 2843.1 VS | gas | 2866 W | liq. | ||
| b1 | 5 | CH2 rock | 1249 | A | 1249.1 S | gas | ||||
| b2 | 6 | CH2 wag | 1167 | A | 1167.3 S | gas | ||||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| W | Weak |
| A | 0~1 cm-1 uncertainty |
Gas Chromatography
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
| Column type | Active phase | Temperature (C) | I | Reference | Comment |
|---|---|---|---|---|---|
| Packed | Porapack Q | 200. | 284. | Goebel, 1982 | N2 |
| Packed | SE-30 | 150. | 229. | Haken, Nguyen, et al., 1979 | Celatom AW silanized; Column length: 3.7 m |
| Packed | Apiezon L | 160. | 249. | Bogoslovsky, Anvaer, et al., 1978 | Celite 545 |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | OV-101 | 273. | Zenkevich, 2005 | 25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; Tstart: 50. C; Tend: 250. C |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | SPB-1 | 247. | Flanagan, Streete, et al., 1997 | 60. m/0.53 mm/5. μm, He; Program: 40C(6min) => 5C/min => 80C => 10C/min => 200C |
| Capillary | SPB-1 | 247. | Strete, Ruprah, et al., 1992 | 60. m/0.53 mm/5.0 μm, Helium; Program: 40 0C (6 min) 5 0C/min -> 80 0C 10 0C/min -> 200 0C |
References
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Goebel, 1982
Goebel, K.-J.,
Gaschromatographische Identifizierung Niedrig Siedender Substanzen Mittels Retentionsindices und Rechnerhilfe,
J. Chromatogr., 1982, 235, 1, 119-127, https://doi.org/10.1016/S0021-9673(00)95793-5
. [all data]
Haken, Nguyen, et al., 1979
Haken, J.K.; Nguyen, A.; Wainwright, M.S.,
Application of linear extrathermodynamic relationships to alcohols, aldehydes, ketones, amd ethoxy alcohols,
J. Chromatogr., 1979, 179, 1, 75-85, https://doi.org/10.1016/S0021-9673(00)80658-5
. [all data]
Bogoslovsky, Anvaer, et al., 1978
Bogoslovsky, Yu.N.; Anvaer, B.I.; Vigdergauz, M.S.,
Chromatographic constants in gas chromatography (in Russian), Standards Publ. House, Moscow, 1978, 192. [all data]
Zenkevich, 2005
Zenkevich, I.G.,
Experimentally measured retention indices., 2005. [all data]
Flanagan, Streete, et al., 1997
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, retrieved from http://www.odccp.org/pdf/technicalseries1997-01-011.pdf. [all data]
Strete, Ruprah, et al., 1992
Strete, P.J.; Ruprah, M.; Ramsey, J.D.; Flanagan, R.J.,
Detection and identification of volatile substances by headspace capillary gas chromatography to aid the diagnosis of acute poisoning,
Analyst, 1992, 117, 7, 1111-1127, https://doi.org/10.1039/an9921701111
. [all data]
Notes
Go To: Top, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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