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Basic Information
CAS No.: 645-12-5
Name: 5-Nitro-2-furoic acid
Article Data: 25
Molecular Structure:
Molecular Structure of 645-12-5 (5-Nitro-2-furoic acid)
Formula: C5H3 N O5
Molecular Weight: 157.083
Synonyms: 2-Furoicacid, 5-nitro- (6CI,7CI,8CI); 5-Nitro-2-furancarboxylic acid; 5-Nitro-2-furoicacid; 5-Nitro-2-furylcarboxylic acid; 5-Nitrofuroic acid; 5-Nitropyromucicacid; NSC 6452; Nitrofurate; Nitrofuroic acid
EINECS: 211-432-6
Density: 1.8109 (rough estimate)
Melting Point: 185-189 ºC
Boiling Point: 332.4°C at 760 mmHg
Flash Point: 154.8°C
Solubility: Slightly soluble in water.
Hazard Symbols:
Risk Codes: R36/37/38;R68   
Safety: Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
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    5-Nitro-2-furoic acid

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    high purity Application:Drug intermediates Materials intermediates and active molecules

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Chemistry

IUPAC Name: 5-Nitrofuran-2-carboxylic acid
Synonyms : 5-Nitrofuran-2-carboxylic acid
Product Categories: Miscellaneous ; API intermediates;Furans
Molecular Structure :
Molecular Formula : C5H3NO5
Molecular Weight : 157.08
CAS NO: 645-12-5
EINECS: 211-432-6
Mol File: 645-12-5.mol
Index of Refraction: 1.577
Surface Tension: 69.4 dyne/cm
Density: 1.626 g/cm3
Flash Point: 154.8 °C
Melting point: 185-189 ºC
Enthalpy of Vaporization: 60.71 kJ/mol
Boiling Point: 332.4 °C at 760 mmHg
Vapour Pressure: 5.83E-05 mmHg at 25°C
Appearance: 5-Nitrofuroic acid (CAS NO. 645-12-5) is yellow crystalline powder.

Toxicity Data With Reference

1.    

mmo-sat 1 mg/L

     MUREAV    Mutation Research. 44 (1977),139.
2.    

mmo-esc 350 mg/L

     MUREAV    Mutation Research. 130 (1984),97.

Consensus Reports

EPA Genetic Toxicology Program.

Safety Profile

Hazard Codes HarmfulXn
Risk Statements 68-36/37/38-40 
R40:Limited evidence of a carcinogenic effect. 
R68:Possible risk of irreversible effects.
R36/37/38: 5-Nitrofuroic acid (CAS NO. 645-12-5) is irritating to eyes, respiratory system and skin.
Safety Statements 36/37/39-22
S22:Do not breathe dust.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
WGK Germany 3
RTECS LV2012000

Specification

1.General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
2.Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. 
3.Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
4.Storage: Store 5-Nitrofuroic acid (CAS NO. 645-12-5) in a cool, dry place. Store in a tightly closed container.