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formaldehyde / methanol /Form
Physical & Chemical propriety:
Chemical formula: CH2O, HCHO Simple structure: HCHO Molecular Weight: 30.03 Density 1.083; the refractive index of 1.3755-1.3775; flash point 60 °C; water-soluble soluble; boiling point -19.5 °C; melting point -118 °C
A colorless, has a strong irritating smell of gas. Its 35% ~ 40% of the aqueous solution known as formalin. Soluble in water, alcohol and ether. Formaldehyde is a gas at room temperature, usually in the form of aqueous solution.
The specification of Formaldehyde
Standard:GB/T9009-1998
Specification: Date:2010-05-08
Item | Standard result | Result |
Appearance | clear, colorless solution | |
density (P20)g/cm3 | 1.075-1.114 | 1.1125 |
the content of Methanol % | <1.8 | 1.0 |
the content of Formaldehyde % | 37.0-37.4 | 37.11 |
(HCoh) Acid % | <0.02 | 0.009 |
Hazen Colority | <10 | 5 |
the content of Fe % | <0.0001 | 0.0001 |
Use
Formaldehyde is an important organic raw materials, mainly used in the plastics industry (such as system phenolic resin, urea-formaldehyde plastics - jade electric), synthetic fibers (such as synthetic vinylon - PVF), leather industry, medicine, dyes, etc. . Formalin has bactericidal and anti-corrosion ability of biological specimens can be impregnated, the dilute solution (0.1-0.5%) can be used to soaking up agriculture for disinfecting seeds.
In addition to formaldehyde can be directly used for disinfection, sterilization, preservatives mainly used in organic synthesis, synthetic materials, paints, rubber, pesticide and other industries, wood-based panel industry developed, the great demand for formaldehyde.
Formaldehyde 37% chemical