Paraformaldehyde

Overview

Molecular Formula (CH2O)n
Chemical structure
Synonym Polyoxymethylene
CAS No 30525-89-4
EINECS No 200-001-8
INCI name Paraformaldehyde

Description

Chemical and Physical Properties

Appearance White prilled solid
Odour Formaldehyde odour
Density (g/mL,20℃) 1.45
Relative Density (g/mL ,Air=1) 1.03
Melting Point (oC) 163-165
Boiling Point (oC) Uncertainty
Dielectric Constant (25oC) Uncertainty
Flash Point (open up, oC) 70
Explosion Limits (Vol %) Uncertainty
Uncertainty
Solubility in Water Unsoluble in wate, Slightly solublein cool water, soluble in dilute acid and dilute alkalis

 

Commercial form

Appearance White prilled solid
Purity ( % min) 91.0-93.0 96±1
PH 4-8 3.5-7.0
Polymerization max 30 30
Formic Acid Wt% max 0.03 0.03
Fe content Wt% max 0.001 0.0003
Methanol content Wt% max 0.8
Total ash(%max) 0.5

 

Packing

Bag, 25kg, 500kg upon request

 

Storage

Store in cool, dry, well-ventilated storage areas in closed containers. Keep away from Heat resources. The storage temperature should be no more than 30℃. Avoid the straight sunshine. Seperately store with oxidant. Slowly load and unload during transportation, preventing the package and container demage.

 

Application

1, Production of Synthesis pesticide, such as acetochlor, butachlor and glyphosate
2, Production of coating: high grade automobile paint.
3, production of resin: synthesis of urea-formaldehyde resin, phenolic resin, polyacetal resin, melamine resin and ion exchanging resin and all kinds of adhensives.
4, Paper making:synthesis of paper enhancer.
5, Fumigant in the Aquaculture.
6, Organic material used for the preparation of pentaerythritol, trimethylolpropane glycerin methacrylate, methyl, etc.
7, Medicine and disinfection.
8, As disinfectant sterilization agent fumigants in the pharmaceutical industry.

 

Classification

  • UN No.: 2213
  • Class: 4.1
  • PG: III
  • 25kg Package
  • Half tons of bags
  • Pallets


Performance

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