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252549

Sigma-Aldrich

Formaldehyde solution

ACS reagent, 37 wt. % in H2O, contains 10-15% Methanol as stabilizer (to prevent polymerization)

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Synonym(s):
Formalin
Linear Formula:
HCHO
CAS Number:
Molecular Weight:
30.03
Beilstein:
1209228
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

1.03 (vs air)

vapor pressure

52 mmHg ( 37 °C)
52 mmHg ( 37 °C)

form

liquid

autoignition temp.

572 °F

contains

10-15% Methanol as stabilizer (to prevent polymerization)

concentration

36.5-38.0%
37 wt. % in H2O

impurities

≤0.006 meq/g Titr. acid

ign. residue

≤0.005%

color

APHA: ≤10

refractive index

n20/D 1.3765

density

1.09 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 ppm
sulfate (SO42-): ≤0.002%

cation traces

Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

suitability

suitable for manufacturing use (Laboratory chemicals)

SMILES string

[H]C([H])=O

InChI

1S/CH2O/c1-2/h1H2

InChI key

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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1 of 4

This Item
15512F163547608
vibrant-m

252549

Formaldehyde solution

vibrant-m

15512

Formaldehyde solution

vibrant-m

F1635

Formaldehyde solution

vibrant-m

47608

Formaldehyde solution

refractive index

n20/D 1.3765

refractive index

-

refractive index

-

refractive index

-

density

1.09 g/mL at 25 °C (lit.)

density

1.09 g/mL at 25 °C (lit.)

density

1.09 g/mL at 25 °C (lit.)

density

1.09 g/mL at 20 °C, 1.09 g/mL at 25 °C (lit.)

form

liquid

form

-

form

liquid

form

liquid

grade

ACS reagent

grade

-

grade

-

grade

for molecular biology

vapor density

1.03 (vs air)

vapor density

1.03 (vs air)

vapor density

1.03 (vs air)

vapor density

1.03 (vs air)

General description

Formaldehyde (formalin) is produced by oxidation of methanol. It is made of 37% formaldehyde and impurities such as methanol, small amounts of formic acid, aldehydes and ketones. It is used as a denaturant in formaldehyde-agarose gel electrophoresis of RNA.

Application

Formaldehyde solution has been used as a fixing agent to fix cells during immunofluorescence imaging and for cross-linking cells during chromatin immunoprecipitation (ChIP) assay.
Formaldehyde solution has been used for cross-linking/fixing of cells in ChIP (chromatin immunoprecipitation) assay. It has been used for fixing of cells for imaging.

Physical form

This product is a solution of approximately 37% by weight of formaldehyde gas in water.

Other Notes

The article number 252549-4X2.5L will be discontinued. Please order the single bottle 252549-2.5L which is physically identical with the same exact specifications.
The article number 252549-6X1L will be discontinued. Please order the single bottle 252549-1L which is physically identical with the same exact specifications.

also commonly purchased with this product

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Carc. 1B - Eye Dam. 1 - Flam. Liq. 3 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1 - STOT SE 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

132.8 °F - closed cup

Flash Point(C)

56 °C - closed cup


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