FORMALDEHYDE

CHRACTERISTICS

• Its other names are
• Oxymethylene, formic aldehyde methyl,
• Present in the form of gas or aqueous concentrated form. Basically it is a gas that is present in the air. In its aqueous form, a 37 % to 50% solution is made which is called formalin. Formalin has 15% methanol.
• It has a pungent smell and its boiling point is -19 ^OC
• The freezing point is -118 C with an auto ignition point as 430degree Celsius.
• It is soluble in water and alcohol.

CHARACTERISTICS OF FARMALINE

• It is 37% solution with 15 % methanol and the boiling point is 96^O C
• The flash point is 50 degree Celsius (without methanol)
• Density is 1.08

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SOURCE

• It is obtained by the synthetic oxidation of methanol.
• Also obtained by the oxidation of petroleum gases like propene and butane having low temperatures
• Silver, copper and iron molybdenum oxides are the catalyst that help in the oxidation

GRADES

Aqueous solution  (formalin) 37, 40, 44 and 50 percent

PRECAUTION

• It can be poisonous if inhaled.
• Causes irritation and is flammable in nature

USES

• It is used in the urea and melamine resins, phenolic resins, ethylene glycol, fertilizers,  hardening agent, reducing agent, textile fabrics, cosmetic manufacturing, adhesives, germ killing chemicals.