Formaldehyde

Synonym(s)

: Formalin, methanol, paraformaldehyde

Mol. Formula

: CH2O

EC / List no.

: 200-001-8

CAS no.

: 50-00-0

Molecular weight

: 30,026

Formaldehyde is a colorless poisonous gas synthesized by the oxidation of methanol and used as an antiseptic, disinfectant, histological fixative and general purpose chemical reagent for laboratory applications. Formaldehyde is readily soluble in water and generally disperses in water as a 37% solution; Formaldehyde, a 10% solution of formaldehyde in water, is used as a disinfectant and to preserve biological specimens. Environmentally, formaldehyde can be found in the atmosphere, fire smoke, automobile exhaust, and cigarette smoke. Small amounts are produced during normal metabolic processes in most organisms, including humans.

Application

»   This substance is used in the following products: adhesives and sealants, coating products, fillers, putties, plasters, modeling clay, inks and toners, polymers, biocides (eg disinfectants, pest control products), fuels, polishes and waxes, washing and cleaning products, cosmetics and personal care products.
»   Used in machine wash liquids/detergents, automotive care products, paints, coatings or adhesives, fragrances and air fresheners.
»   Formic acid is used in metal, wood, plastic building and building materials, flooring, furniture, toys, building materials, curtains, shoes, leather products, paper, cardboard products and electronic equipment.

Product Specifications

Physical and Chemical Properties
» Formaldehyde appears as a white solid.
» It has a slightly sharp smell.

Properties

Characteristics	Unit	Value	Condition
Melting point	°C	-19.1
Boiling point	°C	-92
Solubility	g/ L	550	20 °C, soluble with water
Density	g/cm3	0-81- 0.815	20 °C
Vapor pressure	Pa	12.6- 549000	-109.5 - 50 °C
LogP		0.35	25 °C
Flash point	°C	50- 85
Autoignition temperature	°C	395	100.6- 101 kPa
Viscosity	mPa.s	2.083- 2.835