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Formaldehyde

Name: Formaldehyde
SKU: 0

Basic Information

CAS No.:50-00-0
Molecular Formula：CH2O
Molecular weight:30.03

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Product Details

Formaldehyde is the simplest aldehyde molecule with active chemical properties and certain toxicity. At room temperature, it is a colorless gas with a pungent odor, which easily undergoes polymerization to form polyformaldehyde. Formaldehyde is easily soluble in water, alcohol and other organic solvents. The main sources of formaldehyde in the environment are fuel combustion, industrial applications, decoration materials and various consumer products.

Chemical Properties

Property	Value
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
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)

Safety Information

Property	Value
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
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

Product Usage

Formaldehyde is a highly reactive aldehyde that serves as a cornerstone of modern industrial chemistry. Its most significant application is in the production of synthetic resins, such as urea-formaldehyde, phenol-formaldehyde, and melamine resins, which are essential adhesives for plywood, particleboard, and other wood products. In the manufacturing sector, it is used to produce polyoxymethylene (POM) plastics, valued for their high strength and thermal stability. Additionally, formaldehyde acts as a vital chemical intermediate for synthesizing polyols like pentaerythritol and serves as a powerful disinfectant and preservative in medical laboratories and consumer goods.

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Formaldehyde

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