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P6148

Sigma-Aldrich

Paraformaldehyde

reagent grade, crystalline

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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.25

grade

reagent grade

Quality Level

vapor density

1.03 (vs air)

vapor pressure

<1.45 mmHg ( 25 °C)

form

crystalline

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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This Item
1581274412448.18715
Paraformaldehyde reagent grade, crystalline

P6148

Paraformaldehyde

Essential Grade
Paraformaldehyde powder, 95%

158127

Paraformaldehyde

-
Paraformaldehyde prilled, 95%

441244

Paraformaldehyde

-
Paraformaldehyde for synthesis

8.18715

Paraformaldehyde

-
grade

reagent grade

grade

-

grade

-

grade

-

form

crystalline

form

powder

form

prilled

form

solid

autoignition temp.

572 °F

autoignition temp.

572 °F

autoignition temp.

572 °F

autoignition temp.

300 °C

expl. lim.

73 %

expl. lim.

73 %

expl. lim.

73 %

expl. lim.

7-73 % (v/v)

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

General description

Paraformaldehyde is a cross-linking fixative. It is changed to formaldehyde by heating and by adding small amount of sodium hydroxide.

Application

Paraformaldehyde is recommended for use in the preparation of formalin fixatives for tissues or cells when the samples are to be used in florescence studies.
Paraformaldehyde has been used for fixing of cells and tissue sections during staining procedures.

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Product No.
Description
Pricing

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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Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.

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