Formaldehyde
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"Methanal" redirects here. It is not to be confused with Methanol or Menthol.
Formaldehyde is a naiturally occurring organic compoond wi the formula CH2O (H-CHO). It is the simplest o the aldehydes (R-CHO) an is an aa kent bi its seestematic name methanal. The common name o this substance comes frae its seemilarity an relation tae formic acid.
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Formaldehyde[1] | |||
Seestematic IUPAC name
Methanal[1] | |||
Ither names
Methyl aldehyde Methylene glycol Methylene oxide Formalin (aqueous solution) Formol Carbonyl hydride | |||
Identifiers | |||
CAS Nummer |
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3D model (JSmol) |
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3DMet | B00018 | ||
Beilstein Reference |
1209228 | ||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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DrugBank |
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EC Nummer | 200-001-8 | ||
Gmelin Reference | 445 | ||
IUPHAR/BPS |
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KEGG |
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MeSH | Formaldehyde | ||
PubChem CID |
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RTECS nummer | LP8925000 | ||
UNII | |||
UN nummer | 2209 | ||
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SMILES
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Properties[2] | |||
CH2O | |||
Molar mass | 30.03 g·mol−1 | ||
Appearance | Colorless gas | ||
Density | 0.8153 g/cm3 (−20 °C)[3] | ||
Meltin pynt | −92 °C (−134 °F; 181 K) | ||
Bylin pynt | −19 °C (−2 °F; 254 K)[3] | ||
Solubility in watter |
400 g dm−3 | ||
log P | 0.350 | ||
Vapour pressur | < 1 atm[4] | ||
Acidity (pKa) | 13.27 [5][6] | ||
Magnetic susceptibility | -18.6·10−6 cm3/mol | ||
Dipole moment |
2.33 D | ||
Structur | |||
Pynt group | C2v | ||
Molecular shape | Trigonal planar | ||
Pharmacology | |||
ATCvet code |
QP53AX19 (WHO) | ||
Hazards | |||
Safety data sheet | MSDS | ||
EU clessification | Toxic (T) Corrosive (C) Carc. Cat. 1 | ||
R-phrases | R23/24/25 R34 R43 R45 | ||
S-phrases | (S1/2) S26 S36/37/39 S45 S51 S53 S60 | ||
NFPA 704 |
4
3
0 COR | ||
Flash pynt | 64 °C (147 °F; 337 K) | ||
Autoigneetion temperatur |
430 °C (806 °F; 703 K) | ||
Explosive leemits | 7–73% | ||
Lethal dose or concentration (LD, LC): | |||
LD50 (Median dose) |
100 mg/kg (oral, rat)[7] | ||
LC50 (Median concentration) |
333 ppm (moose, 2 hr) 815 ppm (rat, 30 min)[8] | ||
LCLo (Lawest published) |
333 ppm (cat, 2 hr)[8] | ||
US heal exposur leemits (NIOSH): | |||
PEL (Permissible) |
TWA 0.75 ppm ST 2 ppm (as formaldehyde an formalin)[9][10] | ||
REL (Recommendit) |
Ca TWA 0.016 ppm C 0.1 ppm [15-minute][9] | ||
IDLH (Immediate danger) |
Ca [20 ppm][9] | ||
Relatit compoonds | |||
Relatit aldehydes |
Acetaldehyde Butyraldehyde | ||
Relatit compoonds |
methanol formic acid | ||
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |||
Y verify (whit is YN ?) | |||
Infobox references | |||
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