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| Names | |||
|---|---|---|---|
| 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)
|
|||
| 3DMet | B00018 | ||
Beilstein Reference
|
1209228 | ||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| DrugBank | |||
| EC Nummer | 200-001-8 | ||
| Gmelin Reference | 445 | ||
IUPHAR/BPS
|
|||
| KEGG | |||
| 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[6] | |||
| CH2O | |||
| Molar mass | 30.03 g·mol−1 | ||
| Appearance | Colorless gas | ||
| Density | 0.8153 g/cm3 (−20 °C)[2] | ||
| Meltin pynt | −92 °C (−134 °F; 181 K) | ||
| Bylin pynt | −19 °C (−2 °F; 254 K)[2] | ||
Solubility in watter
|
400 g dm−3 | ||
| log P | 0.350 | ||
| Vapour pressur | < 1 atm[3] | ||
| Acidity (pKa) | 13.27 [4][5] | ||
| 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)[9] | ||
LC50 (Median concentration)
|
333 ppm (moose, 2 hr) 815 ppm (rat, 30 min)[10] | ||
LCLo (Lawest published)
|
333 ppm (cat, 2 hr)[10] | ||
| US heal exposur leemits (NIOSH): | |||
PEL (Permissible)
|
TWA 0.75 ppm ST 2 ppm (as formaldehyde an formalin)[7][8] | ||
REL (Recommendit)
|
Ca TWA 0.016 ppm C 0.1 ppm [15-minute][7] | ||
IDLH (Immediate danger)
|
Ca [20 ppm][7] | ||
| 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). | |||
 verify (whit is   ?)
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| Infobox references | |||
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.
