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158127

Sigma-Aldrich

Paraformaldehyde

powder, 95%

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Synonym(s):
Polyoxymethylene
Linear Formula:
HO(CH2O)nH
CAS Number:
Molecular Weight:
30.03 (as monomer)
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

1.03 (vs air)

Quality Level

vapor pressure

<1.45 mmHg ( 25 °C)

assay

95%

form

powder

autoignition temp.

572 °F

expl. lim.

73 %

mp

120-170 °C (lit.)

density

0.88 g/mL at 25 °C (lit.)

storage temp.

2-8°C

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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1 of 4

This Item
P61484412448.18715
vibrant-m

158127

Paraformaldehyde

-
vibrant-m

P6148

Paraformaldehyde

Essential Grade
vibrant-m

441244

Paraformaldehyde

-
vibrant-m

8.18715

Paraformaldehyde

-
Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

density

0.88 g/mL at 25 °C (lit.)

density

0.88 g/mL at 25 °C (lit.)

density

0.88 g/mL at 25 °C (lit.)

density

1.4 g/cm3 at 20 °C

mp

120-170 °C (lit.)

mp

120-170 °C (lit.)

mp

120-170 °C (lit.)

mp

100-130 °C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

-

storage temp.

-

form

powder

form

crystalline

form

prilled

form

solid

General description

Paraformaldehyde is also referred as polyoxymethylene. It participates as an external CO source in the synthesis of aromatic aldehydes and esters.

signalword

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

4.1B - Flammable solid hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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Protocols

This protocol describes a method for chemical cross-linking of proteins using formaldehyde. With the exception of zero-length cross-linkers, formaldehyde has the shortest cross-linking span (~2-3 Å) of any cross-linking reagent, thus making it an ideal tool for detecting specific protein-protein interactions with great confidence.

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