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Formaldehyde Structure

Formaldehyde

Chemical Properties

Melting point -15°C
Boiling point 97°C(37% solution),-19.5°C(pure)
Density  1.09 g/mL at 25 °C(lit.)
vapor density  1.03 (vs air)
vapor pressure  52 mm Hg ( 37 °C)
refractive index  n20/D 1.377
Flash point 133 °F
storage temp.  room temp
solubility  water: soluble
pka 13.27(at 25℃)
form  Solution
color  APHA: ≤10
Odor Pungent odor detectable at 1 ppm
PH pH (25℃) : 7.0~7.5
Odor Threshold 0.5ppm
Water Solubility  soluble
λmax λ: 260 nm Amax: 0.01
λ: 280 nm Amax: 0.01
Merck  14,4235
BRN  1209228
Henry's Law Constant 2.08(x 10-7 atm?m3/mol) at 25 °C (flow-type generation system, spectrophometry, Kanda et al., 2005)
Exposure limits NIOSH REL: TWA 0.016 ppm, 15-min C 0.1 ppm, IDLH 20 ppm; OSHA PEL: TWA 0.75 ppm, STEL 2 ppm.
InChIKey WSFSSNUMVMOOMR-UHFFFAOYSA-N
FDA 21 CFR 573.460; 173.340; 175.105; 175.210; 176.170; 176.180; 176.200; 177.2800; 178.3120
CAS DataBase Reference 50-00-0(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS) FORMALDEHYDE
EWG's Food Scores 8-10
FDA UNII 1HG84L3525
NCI Dictionary of Cancer Terms formaldehyde
NIST Chemistry Reference Formaldehyde(50-00-0)
IARC 1 (Vol. Sup 7, 62, 88, 100F) 2012
Proposition 65 List Formaldehyde (gas)
EPA Substance Registry System Formaldehyde (50-00-0)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H301+H311-H314-H317-H330-H335-H341-H350-H370
Precautionary statements P202-P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  T
Risk Statements  23/24/25-34-40-43-39/23/24/25-68-45-68/20/21/22
Safety Statements  36/37-51-45-36/37/39-26-53
RIDADR  UN 1198 3/PG 3
WGK Germany  2
RTECS  LP8925000
10
Autoignition Temperature 424 °C for formalin containing 15% methanol
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29121100
Hazardous Substances Data 50-00-0(Hazardous Substances Data)
Toxicity LD50 oral (rat) 500 mg/kg
LD50 skin (rabbit) 270 mg/kg
LC50 inhal (rat) 203 mg/m3 (2 h)
PEL (OSHA) 1 ppm (1.5 mg/m3)
TLV-TWA (ACGIH) 0.3 ppm (ceiling)(0.37 mg/m3)
STEL (OSHA) 2 ppm (2.5 mg/m3)
IDLA 20 ppm
NFPA 704:
4
3 0

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Formaldehyde Chemical Properties,Usage,Production

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