MilliporeSigma
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8.18715

Sigma-Aldrich

Paraformaldehyde

for synthesis

Synonym(s):
Paraformaldehyde
Linear Formula:
(CH2O)n
CAS Number:
MDL number:

vapor pressure

1.93 hPa ( 25 °C)

Quality Level

assay

≥95% (acidimetric)

form

solid

autoignition temp.

300 °C

potency

592 mg/kg LD50, oral (Rat)

expl. lim.

7-73 % (v/v)

technique(s)

immunofluorescence: suitable

pH

5.5 (20 °C in H2O, saturated solution)

mp

100-130 °C

density

1.4 g/cm3 at 20 °C

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

Linkage

Replaces: PX0055-3

Signal Word

Danger

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

Target Organs

Respiratory system

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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