Paraformaldehyde
| Abbreviation |
PFA |
| Plant |
Niigata |
| Main Applications |
Coating compounds, adhesive agent, textile-processing resins, phenol resins |
| Existing Chemical Substance No. |
(9)-1941 |
Properties
| |
86%PFA |
92%PFA |
| Chemical Formula |
HO(CH2O)nH |
| Molecular Weight |
n=2~100 (Melecular weight differs with number of 'n') |
| Appearance or other feature |
White, granular solid, pungent odor |
| Specific Gravity (true specific gravity) |
1.25~1.35 |
1.30~1.40 |
Boiling Point
(℃ 30mmHg) |
No data |
| Freezing Point (℃) |
80~160 |
120~170 |
| Flash Point (℃) |
Approx. 63 |
Approx. 93 |
| Ignition Temperature (℃) |
Approx. 300 |
| Dust Explosion: Lower Explosive Limit |
40g/m3 |
| Minimum Ignition Energy |
20mJ |
| Solubility |
Hardly soluble in water, readily soluble in hot water |
| Stability & Reactivity |
Highly reactive substance; mainly produces methylol and methylene
compounds. |
Applicable Laws
| |
86%PFA |
92%PFA |
| Industrial Safety and Health Law |
Hazard indication required, specified type 3 chemical (as formalin) |
| High Pressure Gas |
None |
| Fire Service Law |
Specified combustible |
| Poisonous and Deleterious Substances Control Law |
Deleterious substance (when containing formaldehyde) |
| Law on the Prevention of Marine Pollution and Maritime Disaster |
- |
| Ship Safety Law |
Hazardous material, Flammable materials |
| Civil Aeronautics Law |
Explosives, Flammable materials |
| Other Major Applicable Laws |
Air Pollution Control Law: specified toxic substance (as formalin)
Pharmaceutical Affairs Law: dangerous drug (designated drug)
(MGC does not directly market this chemical.) |
Classification of Hazard
| |
86%PFA |
92%PFA |
| Classification |
Release corrosive and flammable formaldehyde. |
| Hazardous |
Explosive and hazardous mixture can be formed when flammable solid
or dust is dispersed into the air. Depolymerize with temperature
increase and will release flammable formaldehyde which is toxic
and corrosive. |
| Harmful |
Acute toxicity of medium grade and irritates the skin and the
eye. Generated formaldehyde is classified into 2A of IARC, which
means it is a probable carcinogen to man, and designated R43 (skin
contact may cause sensitization) according to the EEC convention. |
Product Standard
| |
86%PFA |
92%PFA |
| Appearance |
White solid |
| Formaldehyde Content (%) |
86.0±1.0 |
92.0±1.0 |
| Free Acid (% as formic acid) |
0.02 or less |
| Ignition Residue (%) |
0.01 or less |
| Chloride (Cl) (%) |
0.002 or less |
| Heavy Metal (Pb) (%) |
0.002 or less |
| Iron (Fe) (%) |
0.001 or less |
Inquiries
Natural Gas Chemicals Company
Basic Chemicals Division
TEL: +81-3-3283-4792
FAX: +81-3-3287-0930
Inquiries Form
