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A2283912

Paraformaldehyde , 95% , 30525-89-4

Synonym(s):
Paraformaldehyde;Polyoxymethylene

CAS NO.:30525-89-4

Empirical Formula: (CH2O)n

Molecular Weight: 90.08

MDL number: MFCD00133991

EINECS: 608-494-5

Update time: 2022-07-08

PRODUCT 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)
Flash point: 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.
InChIKey VHWYCFISAQVCCP-UHFFFAOYSA-N

Description and Uses

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.

Safety

Symbol(GHS) 
GHS02,GHS05,GHS07,GHS08
Signal word  Danger
Hazard statements  H228-H302+H332-H315-H317-H318-H335-H341-H350
Precautionary statements  P210-P280-P301+P312-P304+P340+P312-P305+P351+P338-P308+P313
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 4.1/PG 3
WGK Germany  3
RTECS  RV0540000
Autoignition Temperature 572 °F
TSCA  Yes
HazardClass  4.1
PackingGroup  III
HS Code  38084090
Toxicity LD50 orally in Rabbit: 592 mg/kg

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