252549-25ml

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.

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.

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.

Packaging

1, 4 L in glass bottle

25, 100, 4×100, 500, 6×500 mL in glass bottle

Physical form

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

anion traces	chloride (Cl^-): ≤5 ppm, sulfate (SO₄^2-): ≤0.002%
assay	36.5-38.0%
autoignition temp.	572 °F
cation traces	heavy metals: ≤5 ppm (by ICP-OES), Fe: ≤5 ppm
color	APHA: ≤10
concentration	37 wt. % in H₂O
contains	10-15% Methanol as stabilizer (to prevent polymerization)
density	1.09 g/mL at 25 °C (lit.)
form	liquid
grade	ACS reagent
ign. residue	≤0.005%
impurities	≤0.006 meq/g Titr. acid
InChI key	WSFSSNUMVMOOMR-UHFFFAOYSA-N
InChI	1S/CH2O/c1-2/h1H2
Quality Level	200
refractive index	n20/D 1.3765
SMILES string	[H]C([H])=O
suitability	suitable for manufacturing use (Laboratory chemicals)
vapor density	1.03 (vs air)
vapor pressure	52 mmHg ( 37 °C)