Formaldehyde

"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.

Formaldehyde

Skeletal fomula o formaldehyde wi explicit hydrogens addit Spacefill model o formaldehyde
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	50-00-0 Y
3D model (JSmol)	Interactive eemage
3DMet	B00018
Beilstein Reference	1209228
ChEBI	CHEBI:16842 Y
ChEMBL	ChEMBL1255 Y
ChemSpider	692 Y
DrugBank	DB03843 Y
EC Nummer	200-001-8
Gmelin Reference	445
IUPHAR/BPS	4196
KEGG	D00017 Y
MeSH	Formaldehyde
PubChem CID	712
RTECS nummer	LP8925000
UNII	1HG84L3525 Y
UN nummer	2209
InChI InChI=1S/CH2O/c1-2/h1H2 Y Key: WSFSSNUMVMOOMR-UHFFFAOYSA-N Y InChI=1/CH2O/c1-2/h1H2 Key: WSFSSNUMVMOOMR-UHFFFAOYAT
SMILES C=O
Properties[2]
Chemical formula	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 Decanal Heptanal Hexanal Nonanal Octadecanal Octanal Pentanal Propionaldehyde
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