Formic acid

CAS Number

64-18-6

Molecular Formula

CH₂O₂

Also known as:

Methanoic acid; HCOOH; Formic acid; FA; Acide formique

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Product Description

Formic acid (FA) is the simplest carboxylic acid and a widely used industrial acidulant and chemical intermediate. It is applied across leather processing, textile finishing, rubber/latex processing, agricultural silage preservation and as a feedstock for formates and esters.

Applications

  • Leather tanning
    Formic acid is used for pickling, deliming and pH control in hide processing and tanning operations.
  • Silage / Feed preservation
    Formic acid acts as a preservative and antibacterial agent to stabilize silage and reduce spoilage.
  • Textile dyeing and finishing
    Formic acid adjusts dye-bath pH to improve dye uptake and fixation during fabric processing.
  • Rubber / Latex processing
    Formic acid is used as a coagulant to induce latex coagulation and facilitate rubber recovery.
  • Chemical intermediate
    Formic acid serves as a feedstock for sodium formate, formate esters, formamide and related chemical derivatives.
  • Cleaning and descaling
    Formic acid is formulated into descalers and cleaners to remove carbonate and oxide deposits.
  • Analytical / HPLC modifier
    Formic acid is used as a volatile mobile-phase modifier in LC/MS and HPLC for improved ionization and peak shape.
  • Energy research
    Formic acid is applied experimentally as a liquid hydrogen carrier in direct formic-acid fuel cell research.

Technical Parameters

Parameter Value
Appearance Colorless to pale liquid; pungent odor
Assay ≥ 84.5–85.0%
Specific gravity (20 °C) ~1.19–1.22 g·mL⁻¹
Residue on evaporation ≤ 0.05–0.06%
Chloride (Cl) ≤ 0.005–0.006%
Sulfate (SO₄²⁻) ≤ 0.002–0.004%
Iron (Fe) ≤ 0.0006–0.001%
Color (Pt-Co / Hazen) ≤ 30 Hazen
Heavy metals (as Pb) ≤ 0.001%

Applications

Preservatives/Antioxidants

Quick Information

EINECS 200-579-1
Molecular Weight 46.03 g/mol

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