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

Fp

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: 0.01λ: 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)

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

OEB

E

OEL

TWA: 0.016 ppm, Ceiling: 0.1 ppm [15-minute]

WGK Germany

2

RTECS

LP8925000

F

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/kgLD50 skin (rabbit) 270 mg/kgLC50 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