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Merck
CN

33731

Sigma-Aldrich

Trichloroacetic acid

puriss. p.a., ACS reagent, ≥99.5%

Synonym(s):

TCA

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About This Item

Linear Formula:
Cl3CCOOH
CAS Number:
76-03-9
Molecular Weight:
163.39
Beilstein:
970119
EC Number:
200-927-2
MDL number:
MFCD00004177
UNSPSC Code:
12352100
PubChem Substance ID:
57648907

Key Documents

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grade

ACS reagent
puriss. p.a.

vapor density

<1 (vs air)

vapor pressure

1 mmHg ( 51 °C)

Assay

≥99.5%

impurities

≤0.002% heavy metals (as Pb)
≤0.005% water insolubles

ign. residue

≤0.01% (as SO4)

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-): ≤10 mg/kg
nitrate (NO3-): ≤20 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤100 mg/kg

cation traces

Cu: ≤5 mg/kg
Fe: ≤10 mg/kg

suitability

complies for appearance of solution

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

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General description

Trichloroacetic acid (TCA) is a chlorinated acetic acid. It is one of the major metabolite of trichloroethylene (TCE).

Application

Traditionally used to precipitate protein. Has been used to determine protein concentration by quantitative precipitation. Used as decalcifier and fixative in microscopy.
Trichloroacetic acid may be used for the quantification of inorganic phosphorus in various biological samples (serum, urine and stool ash solutions). It may be used for the elimination of acid-soluble and lipid phosphorous during the quantitative estimation of deoxyribonucleic acid, ribonucleic acid and phosphoproteins in animal tissues. 10% trichloroacetic acid may be employed for the preparation of radioactive proteins.

Pictograms

CorrosionEnvironment
GHS05,GHS09

Signal Word

Danger

Hazard Statements

H314,H410

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1A

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 2

Flash Point(F)

>235.4 °F - closed cup

Flash Point(C)

> 113 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
SZBG1450
SZBG1040
SZBG0700
SZBG014A
SZBG0140

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A method for the determination of desoxyribonucleic acid, ribonucleic acid, and phosphoproteins in animal tissues.
G SCHMIDT et al.
The Journal of biological chemistry, 161, 83-89 (1945-01-01)
Solubility of albumin in alcohol after precipitation by trichloroacetic acid: a simplified procedure for separation of albumin.
J R DEBRO et al.
Nature, 178(4541), 1067-1067 (1956-11-10)
A microcolorimetric method for the determination of inorganic phosphorus.
H H TAUSSKY et al.
The Journal of biological chemistry, 202(2), 675-685 (1953-06-01)
S L Herren-Freund et al.
Toxicology and applied pharmacology, 90(2), 183-189 (1987-09-15)
Trichloroethylene (TCE) has previously been shown to be carcinogenic in mouse liver when administered by daily gavage in corn oil. The metabolism of TCE results, in part, in the formation of trichloroacetic acid (TCA) as a major metabolite and dichloroacetic
Valentina Folgiero et al.
Oncotarget, 5(8), 2052-2064 (2014-06-07)
Microenvironmental factors contribute to the immune dysfunction characterizing acute myeloid leukemia (AML). Indoleamine 2,3-dioxygenase 1 (IDO1) is an interferon (IFN)-γ-inducible enzyme that degrades tryptophan into kynurenine, which, in turn, inhibits effector T cells and promotes regulatory T-cell (Treg) differentiation. It
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