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
PH :pH (25℃) : 7.0～7.5
Odor :Pungent odor detectable at 1 ppm
Odor Threshold :0.5ppm
explosive limit :7-73% (v/v) Formaldehyde)
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 atmm³/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.
Cosmetics Ingredients Functions :DENATURANT
ANTIMICROBIAL
PRESERVATIVE Cosmetic Ingredient Review (CIR) :Formaldehyde (50-00-0)
InChI :1S/CH2O/c1-2/h1H2
InChIKey :WSFSSNUMVMOOMR-UHFFFAOYSA-N
SMILES :[H]C([H])=O
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 H227 Combustible liquid Flammable liquids Category 4 Warning P210, P280, P370+P378, P403+P235,P501 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 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,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 H360 May damage fertility or the unborn child Reproductive toxicity 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 H372 Causes damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 1 Danger P260, P264, P270, P314, P501 H401 Toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 2 P273, P501 H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 Wear respiratory protection. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention. P342+P311 IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician. P370+P378 In case of fire: Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P405 Store locked up. P501 Dispose of contents/container to..…