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
form :Solution
pka :13.27(at 25℃)
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)
Dielectric constant :23.0（Ambient）
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
LogP :0.350
CAS DataBase Reference :50-00-0(CAS DataBase Reference)
IARC :1 (Vol. Sup 7, 62, 88, 100F) 2012
NIST Chemistry Reference :Formaldehyde(50-00-0)
EPA Substance Registry System :Formaldehyde (50-00-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H341 Suspected of causing genetic defects Germ cell mutagenicity Category 2 Warning P201,P202, P281, P308+P313, P405,P501 H350 May cause cancer Carcinogenicity Category 1A, 1B Danger H370 Causes damage to organs Specific target organ toxicity, single exposure Category 1 Danger P260, P264, P270, P307+P311, P321,P405, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.