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221198

Sigma-Aldrich

Formamide

ACS reagent, ≥99.5%

Synonym(s):

Amide C1, Formic amide

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About This Item

Linear Formula:
HCONH2
CAS Number:
75-12-7
Molecular Weight:
45.04
Beilstein:
505995
EC Number:
200-842-0
MDL number:
MFCD00007941
UNSPSC Code:
12352111
PubChem Substance ID:
24853220

grade

ACS reagent

Quality Level

200

vapor density

1.55 (vs air)

vapor pressure

0.08 mmHg ( 20 °C)
30 mmHg ( 129 °C)

Assay

≥99.5%

form

liquid

autoignition temp.

932 °F

technique(s)

PCR: suitable

color

APHA: ≤10

refractive index

n20/D 1.447 (lit.)

pH

4-10 (20 °C, 200 g/L)

bp

210 °C (lit.)

mp

2-3 °C (lit.)

transition temp

freezing point 2.0-3.0 °C

density

1.134 g/mL at 25 °C (lit.)

SMILES string

NC=O

InChI

1S/CH3NO/c2-1-3/h1H,(H2,2,3)

InChI key

ZHNUHDYFZUAESO-UHFFFAOYSA-N

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Application

The addition of formamide may enhance the specificity and efficiency of amplification of PCR (polymerase chain reaction). It may be used as an ammonia equivalent for the palladium-catalyzed aminocarbonylation of 1-bromo-3-trifluoromethylbenzene to form 3-(trifluoromethyl)benzamide.
Formamide destabilizes nucleic acid duplexes and may be used, typically, at a concentration of 50%, in hybridization protocols requiring lower hybridization temperatures.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H351 - H360D - H373

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

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Certificates of Analysis (COA)

Lot/Batch Number
SHBP3029
SHBP0267
SHBN9786
SHBN1698
SHBM7953

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Formamide can dramatically improve the specificity of PCR.
Sarkar G, et al.
Nucleic Acids Research, 18(24), 7465-7465 (1990)
Weinreb SM.
Science of Synthesis: Houben-Weyl Methods of Molecular Transformations, 21, 126-126 (2014)
J Casey et al.
Nucleic acids research, 4(5), 1539-1552 (1977-01-01)
The thermal stabilities of RNA:DNA hybrids are substantially greater than those of DNA:DNA duplexes in aqueous electrolyte solutions containing high concentrations of formamide. Association rates to form DNA:DNA duplexes and DNA:RNA hybrids have been measured in these solvents. There is
Microwave spectrum and molecular structure of formamide.
Costain CC and Dowling JM.
J. Chem. Phys. , 32(1), 158-165 (1960)
The formamide method for the extraction of polysaccharides from haemolytic streptococci.
Fuller AT.
British Journal of Experimental Pathology, 32(1), 130-130 (1960)
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