F

Formamide

IUPAC: formamide

CH3NO Solvents CAS 75-12-7
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Quick Reference
Formula / NotationCH3NO
CAS Number75-12-7
Molecular Weight45.041
Melting Point36.5 °F (NTP, 1992)
Boiling Point410 °F at 760 mmHg (decomposes) (NTP, 1992)
Density1.1334 at 68 °F (USCG, 1999) - Denser than water; will sink
Solubilitygreater than or equal to 100 mg/mL at 66 °F (NTP, 1992)
AppearanceFormamide appears as a colorless liquid with a faint odor of ammonia. Denser than water. Freezing point 36 °F. (USCG, 1999)
Also Known As75-12-7; Methanamide; carbamaldehyde; Formimidic acid; Formic acid, amide; Methanoic acid, amide; Amid kyseliny mravenci; DTXSID8025337; NSC-748; 4781T907ZS
CategorySolvents

What is Formamide?

Formamide (CH3NO) is a solvent that appears as Formamide appears as a colorless liquid with a faint odor of ammonia. Denser than water. Freezing point 36 °F. (USCG, 1999). It has a molecular weight of 45.041 g/mol. Boiling point: 410 °F at 760 mmHg (decomposes) (NTP, 1992). Melting point: 36.5 °F (NTP, 1992).

Formula & Notation

CH3NO

IUPAC Name: formamide

Other Names / Synonyms: 75-12-7; Methanamide; carbamaldehyde; Formimidic acid; Formic acid, amide; Methanoic acid, amide; Amid kyseliny mravenci; DTXSID8025337; NSC-748; 4781T907ZS

Properties & Characteristics

Appearance: Formamide appears as a colorless liquid with a faint odor of ammonia. Denser than water. Freezing point 36 °F. (USCG, 1999). Molecular formula: CH3NO. Molecular weight: 45.041 g/mol. Boiling point: 410 °F at 760 mmHg (decomposes) (NTP, 1992). Melting point: 36.5 °F (NTP, 1992). Density: 1.1334 at 68 °F (USCG, 1999) - Denser than water; will sink. Solubility: greater than or equal to 100 mg/mL at 66 °F (NTP, 1992). Vapor pressure: 3 mmHg at 86 °F ; 760 mmHg at 410.9 °F (NTP, 1992). LogP: -0.8.

Physical Data

PropertyValue
Melting Point36.5 °F (NTP, 1992)
Boiling Point410 °F at 760 mmHg (decomposes) (NTP, 1992)
Density1.1334 at 68 °F (USCG, 1999) - Denser than water; will sink
Molecular Weight45.041
Solubilitygreater than or equal to 100 mg/mL at 66 °F (NTP, 1992)
AppearanceFormamide appears as a colorless liquid with a faint odor of ammonia. Denser than water. Freezing point 36 °F. (USCG, 1999)

Uses & Applications

Used as a reaction solvent in organic synthesis, extraction solvent, cleaning agent, or in pharmaceutical manufacture.

Safety Information

Flammable solvent. Keep away from heat, sparks, and open flame. Use in well-ventilated area or fume hood. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Formamide
Formula CH3NO
CAS Number 75-12-7
Molecular Weight 45.041
Category Solvents
Synonyms 75-12-7; Methanamide; carbamaldehyde; Formimidic acid; Formic acid, amide; Methanoic acid, amide; Amid kyseliny mravenci; DTXSID8025337; NSC-748; 4781T907ZS

Frequently Asked Questions

Formamide (CH3NO) is a solvent that appears as Formamide appears as a colorless liquid with a faint odor of ammonia. Denser than water. Freezing point 36 °F. (USCG, 1999). It has a molecular weight of 45.041 g/mol. Boiling point: 410 °F at 760 mmHg (decomposes) (NTP, 1992). Melting point: 36.5 °F (NTP, 1992).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.