Formaldehyde

methanal, methyl aldehyde, methylene oxide, formalin

How to detect Formaldehyde

Formula: CH2O | CAS: 50-00-0

Synonyms: methanal, methyl aldehyde, methylene oxide, formalin

Formaldehyde is normally prepared as a 43% solution in water as formalin. It is used chiefly in the formation of resins used in binding of wood products such as fibreboard, in manufacture of coatings and medicines.

Specification

SpecificationValue/Information
FormulaCH2O
CAS no.50-00-0
Gas Response Factor, 11.7 eV0.6
Gas Response Factor, 10.6 eVZR
Gas Response Factor, 10.0 eVZR
ppm per mg/m⁻³, (20 °C, 1 bar)0.801
Molecular Weight, g/mole30.0
Melting point, °C-92
Boiling point, °C-19.1
Flash point, °C45
Lower Explosive Limit, %7
SpecificationValue/Information
Density, g.cm⁻³1.08
Ionisation Energy, eV10.87
EH40 TWA, ppm2
EH40 TWA, mg.m⁻³2.5
EH40 STEL, ppm2
EH40 STEL, mg.m⁻³2.5
NIOSH TWA REL, ppm0.016
NIOSH ceiling, ppm0.1
NIOSH IDLH, ppm20
OSHA TWA PEL, ppm0.75

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