Paraformaldehyde #CAS30525-89-4
CAS Number:30525-89-4
Chemical Formula:(CH2O)x
Synonyms:
POLY(TRIOXANE)
POLYACETAL RESIN
formaldehydepolymer
Appearance:White to Off-white rilled
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Paraformaldehyde #CAS30525-89-4
Paraformaldehyde (IUPAC name: Polyoxymethylene, POM) is a polymer of formaldehyde (high molecular weight polyoxymethylene), typically with a structural length of eight to one hundred chemical book sites. Long-chain paraformaldehyde is commonly used to manufacture heat-resistant plastics, also known as polyoxymethylene plastic (POE, DuPont's Derlin). Paraformaldehyde decomposes rapidly, releasing formaldehyde with a slightly odorous smell.
Application of Paraformaldehyde
Paraformaldehyde is used as a fumigant, a disinfectant and in the manufacture of synthetic resins like melamine resin, phenol resin and polyacetal resin. It is also used in cell culture. It also serves as a fixative in electron microscopy. It is also used in the preparation of formalin fixatives for tissues or cells. To use the chemical as a fixative, it must be converted to the monomer formaldehyde by heating as formaldehyde is the active chemical in fixation.
| Paraformaldehyde Chemical Properties |
| Melting point | 120-170 °C (lit.) |
| Boiling point | 107.25°C (rough estimate) |
| density | 0.88 g/mL at 25 °C (lit.) |
| vapor density | 1.03 (vs air) |
| vapor pressure | <1.45 mm Hg ( 25 °C) |
| refractive index | 1.4540 (estimate) |
| Fp | 158 °F |
| storage temp. | 2-8°C |
| solubility | chlorophenol above 70°C: soluble |
| form | prilled |
| color | White to off-white |
| PH | 5.5 (H2O, 20℃)(saturated solution) |
| Odor | odor of formaldehyde |
| PH Range | 4 - 5.5 |
| explosive limit | 7-73%(V) |
| Water Solubility | sparingly soluble |
| Merck | 14,7025 |
| BRN | 102769 |
| Dielectric constant | 4.0（Ambient） |
| Stability: | Stable. Incompatible with strong acids, organic acids, strong oxidizing agents, oxides, alkalies, strong bases, amines. Combustible. Dust may form an explosive mixture with air. Liberates poisonous gases on combustion. |
| InChI | 1S/CH2O/c1-2/h1H2 |
| InChIKey | VHWYCFISAQVCCP-UHFFFAOYSA-N |
| SMILES | [O-]#[C+H2] |
| EPA Substance Registry System | Paraformaldehyde (30525-89-4) |
| Safety Information |
| Hazard Codes | Xn,F |
| Risk Statements | 31-43-40-36/37/38-20/22-41-37/38-42/43-20/21/22-11 |
| Safety Statements | 36-45-36/37/39-26-24-22 |
| RIDADR | UN 2213 |
| WGK Germany | 3 |
| RTECS | RV0540000 |
| Autoignition Temperature | 572 °F |
| TSCA | TSCA listed |
| HazardClass | 4.1 |
| PackingGroup | III |
| HS Code | 38084090 |
| Storage Class | 4.1B - Flammable solid hazardous materials |
| Hazard Classifications | Acute Tox. 4 Inhalation Acute Tox. 4 Oral Carc. 1B Eye Dam. 1 Flam. Sol. 2 Muta. 2 Skin Irrit. 2 Skin Sens. 1 STOT SE 3 |
| Hazardous Substances Data | 30525-89-4(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 592 mg/kg |
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