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252549

Formaldehyde solution

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

Synonym(s):

Formalin

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About This Item

Linear Formula:
HCHO
CAS Number:
50-00-0
Molecular Weight:
30.03
NACRES:
NA.21
PubChem Substance ID:
24855218
UNSPSC Code:
12352114
MDL number:
MFCD00003274
Beilstein/REAXYS Number:
1209228
Form:
liquid
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Product Name

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

grade

ACS reagent

Quality Segment

200

vapor density

1.03 (vs air)

vapor pressure

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

solubility

water: soluble

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

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 for cross-linking/fixing of cells in ChIP (chromatin immunoprecipitation) assay. It has been used for fixing of cells for imaging.
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.

Physical form

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

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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

Eyes,Central nervous system, Respiratory system

Storage Class

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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