252549

Formaldehyde solution

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

• Synonym(s): Formalin
• 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

Properties

• Product Name: Formaldehyde solution, ACS reagent, 37 wt. % in H₂O, contains 10-15% Methanol as stabilizer (to prevent polymerization)
• InChI: 1S/CH2O/c1-2/h1H2
• SMILES string: [H]C([H])=O
• InChI key: WSFSSNUMVMOOMR-UHFFFAOYSA-N
• grade: ACS reagent
• 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
• solubility: water: soluble
• density: 1.09 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤5 ppm; sulfate (SO₄^2-): ≤0.002%
• cation traces: Fe: ≤5 ppm; heavy metals: ≤5 ppm (by ICP-OES)
• suitability: suitable for manufacturing use (Laboratory chemicals)
• Quality Level: 200

Description

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.

Physical form

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

Safety Information

• pictograms: GHS02,GHS06,GHS08,GHS05
• signalword: Danger
• hcodes: H226,H301 + H311,H314,H317,H330,H335,H341,H350,H370
• pcodes: P202 - P210 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 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