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SZSE：002741
Chemical Reagents
Paraformaldehyde?COA Report
  • CAS No.：30525-89-4
  • Molecular formula：(CH2O)n
  • UN Code：2213
  • EC No.：203-812-5
  • HS-No：29126000
Information
Specification category：
Product No. Product name specifications
1.17767.014 Paraformaldehyde AR500g
Characteristic： Appearance and properties:low molecular weight is a white crystalline powder, with smell of formaldehyde.
Relative density(water=1)?:1.39
Relative vapor density(air=1):1.03
Melting point(℃):120-170
Concentration:pure product
Saturated vapor pressure:0.19(25℃)
Solubility:insoluble in ethanol, slightly soluble in water, soluble in dilute acid, dilute alkali.
Combustion heat(kJ/mol):510.0
Technical indicators：
Item AR CP
Assay ≥95.0% ≥94.0%
Solubility test in ammonia Pass Pass
Acidity and alkalinity Pass Pass
Residue on ignition(as SO4) ≤0.1% ≤0.5%
Chloride ≤0.002% ≤0.005%
Sulfate ≤0.01% ≤0.02%
Iron ≤0.005% ≤0.01%
Heavy metals ≤0.002% ≤0.003%
Sulfuric acid test Pass Pass
Hazard characteristics：

IATA-DGR UN 2213 PARAFORMALDEHYDE,4.1,Ⅲ

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