Paraformaldehyde White Powder
Paraformaldehyde is a kind of Organic Chemicals.Paraformaldehyde is a white flammable crystalline powder with a formaldehyde odor. Slowly soluble in cold water, dissolves quickly in hot water. The solubility in water at 20°C is 0.24g/100cm3H2O. Insoluble in ethanol, ether. Soluble in caustic soda and potassium solution. Physical properties CAS Number: 30525-89-4 Molecular Formula: HO-(CH2O)n-H,n=10-100 Molecular Weight: (30)n Steam pressure: 0.19kPa/25°C Flash point: 71°C Melting point: 120~170°C Paraformaldehyde Spedification:
ITEM |
STANDARD |
Cotent |
≥96% |
chloride |
≤0.005% |
sulphate |
≤0.02% |
Heavy metal( as Pb ) |
≤0.003% |
Fe |
≤0.01% |
appearance |
White or light yellow silt |
Ignition residue |
≤0.5% |