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
Metal Compounds
PCB Solutions
Chemical Reagents
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