251399

Trichloroacetic acid

ACS reagent, ≥99%

• Synonym(s): TCA
• Linear Formula: Cl₃CCOOH
• CAS Number: 76-03-9
• Molecular Weight: 163.39
• Beilstein/REAXYS Number: 970119
• EC Number: 200-927-2
• MDL number: MFCD00004177
• UNSPSC Code: 12352100

Properties

• grade: ACS reagent
• vapor density: <1 (vs air); <1 (vs air)
• vapor pressure: 1 mmHg ( 51 °C)
• assay: ≥99%
• ign. residue: ≤0.03%
• refractive index: n20/D 1.62 (lit.)
• bp: 196 °C (lit.)
• mp: 54-58 °C (lit.)
• density: 1.62 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.001%; nitrate (NO₃^-): ≤0.002%; phosphate (PO₄^3-): ≤5 ppm; sulfate (SO₄^2-): ≤0.02%
• cation traces: Fe: ≤0.001%; heavy metals: ≤0.002%
• SMILES string: OC(=O)C(Cl)(Cl)Cl
• InChI: 1S/C2HCl3O2/c3-2(4,5)1(6)7/h(H,6,7)
• InChI key: YNJBWRMUSHSURL-UHFFFAOYSA-N

Description

Application

Traditionally used to precipitate protein. Has been used to determine protein concentration by quantitative precipitation. Used as decalcifier and fixative in microscopy.