47671

Formamide

BioUltra, for molecular biology, ≥99.5% (T)

• Synonym(s): Amide C₁, Formic amide
• Linear Formula: HCONH₂
• CAS Number: 75-12-7
• Molecular Weight: 45.04
• Beilstein: 505995
• EC Number: 200-842-0
• MDL number: MFCD00007941
• PubChem Substance ID: 57651075
• NACRES: NA.25

Properties

• grade: for molecular biology
• Quality Level: 200
• vapor density: 1.55 (vs air)
• vapor pressure: 0.08 mmHg ( 20 °C); 30 mmHg ( 129 °C)
• product line: BioUltra
• assay: ≥99.5% (T)
• form: liquid
• autoignition temp.: 932 °F
• technique(s): hybridization: suitable
• impurities: DNases, none detected; RNases, none detected; insoluble matter, passes filter test; phosphatases, none detected; proteases, none detected
• ign. residue: ≤0.1%
• refractive index: n20/D 1.447 (lit.); n20/D 1.447
• pH: 7-9 (25 °C, 1 M in H₂O)
• bp: 210 °C (lit.)
• mp: 2-3 °C (lit.)
• solubility: H₂O: 10 M at 20 °C, clear, colorless
• density: 1.134 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤1 mg/kg; sulfate (SO₄^2-): ≤10 mg/kg
• cation traces: Ag: ≤5 mg/kg; Al: ≤1 mg/kg; As: ≤0.1 mg/kg; Ba: ≤1 mg/kg; Bi: ≤1 mg/kg; Ca: ≤5 mg/kg; Cd: ≤1 mg/kg; Co: ≤1 mg/kg; Cr: ≤1 mg/kg; Cu: ≤1 mg/kg; Fe: ≤1 mg/kg; K: ≤20 mg/kg; Li: ≤1 mg/kg; Mg: ≤1 mg/kg; Mn: ≤1 mg/kg; Mo: ≤1 mg/kg; NH₄⁺: ≤1000 mg/kg; Na: ≤20 mg/kg; Ni: ≤1 mg/kg; Pb: ≤1 mg/kg; Sr: ≤1 mg/kg; Tl: ≤5 mg/kg; Zn: ≤1 mg/kg
• SMILES string: NC=O
• λ: 10 M in H₂O
• UV absorption: λ: 260 nm A_max: ≤0.4; λ: 280 nm A_max: ≤0.1
• InChI: 1S/CH3NO/c2-1-3/h1H,(H2,2,3)
• InChI key: ZHNUHDYFZUAESO-UHFFFAOYSA-N

Description

General description

Formamide, a naturally occurring amide, contains carbon, hydrogen, oxygen, and nitrogen in its structure.

Application

Formamide has been used:

• as a component in the hybridization buffer for in situ hybridization as a component of solution X to wash the slides to remove the coverslips
• in the preparation of denaturation solution for spectral karyotyping (SKY) analysis
• in the preparation of 1% formaldehyde solution for the pretreatment of slides for comparative genomic hybridization (CGH)
• to prepare pre-hybridization buffer I, II, III, IV, and hybridization buffer I, II, and III for RNA fluorescence in situ hybridization (RNA-FISH)
• as an ionizing solvent in the production of formic esters and vitamin, a softener for paper, in animal glues, and water-soluble gums, in molecular biology as a denaturing agent

Formamide destabilizes nucleic acid duplexes and may be used, typically, at a concentration of 50%, in hybridization protocols requiring lower hybridization temperatures.

Packaging

250, 250 mL

1, 1, 2.5, 2.5 L

Biochem/physiol Actions

Formamide serves as a good solvent for polar organic and inorganic compounds with potential catalytic activity in prebiotic processes due to its high dielectric constant.

Other Notes

For the preparation of formamide denaturing polyacrylamide gels; In situ hybridization on human chromosomes

Safety Information

• Pictograms: GHS08
• Signal Word: Danger
• Hazard Statements: H351 - H360D - H373
• Precautionary Statements: P202 - P260 - P280 - P308 + P313 - P405 - P501
• Hazard Classifications: Carc. 2 - Repr. 1B - STOT RE 2 Oral
• Target Organs: Blood
• Storage Class Code: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• WGK: WGK 1
• Flash Point(F): 305.6 °F
• Flash Point(C): 152 °C
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves