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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:
Molecular Weight:
45.04
Beilstein:
505995
EC Number:
MDL number:
UNSPSC Code:
12352111
PubChem Substance ID:

grade

ACS reagent

Quality Level

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

Signal Word

Danger

Hazard Statements

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.

PRTR

Class II Designated Chemical Substances

FSL

Group 4: Flammable liquids
Type 3 petroleums
Hazardous rank III
Water soluble liquid

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

221198-500ML:4548173117911
221198-2L:
221198-18L:
221198-1L:4548173117881
221198-100ML:4548173117874
221198-5ML:
221198-4L:
221198-6X1L:
221198-4X4L:4548173117904
221198-20L:4548173117898
221198-BULK:
221198-VAR:


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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)
Microwave spectrum and molecular structure of formamide.
Costain CC and Dowling JM.
J. Chem. Phys. , 32(1), 158-165 (1960)
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
Solubilization in formamide protects RNA from degradation.
Chomczynski P.
Nucleic Acids Research, 20(14), 3791-3791 (1992)

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