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Trichloroacetic acid

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CAS:76-03-9
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CAS:76-03-9
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CAS:76-03-9
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Products Intro: Product Name:Trichloroacetic acid
CAS:76-03-9
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Trichloroacetic acid manufacturers

  • Trichloroacetic Acid
  • $10.70 / Kg/Bag
  • 2021-12-01
  • CAS:76-03-9
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  • Trichloroacetic acid
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  • 2021-11-29
  • CAS:76-03-9
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  • Trichloroacetic Acid
  • $15.00-10.00 / KG
  • 2021-07-13
  • CAS:76-03-9
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Trichloroacetic acid Basic information
General Description Application Preparation
Product Name:Trichloroacetic acid
Synonyms:Deblock trichloroacetic acid solution;TRICHLOROACETIC ACID extrapure;RARECHEM AL BO 0072;Aceticacid,trichloro-;Aceto-Caustin;Acide trichloracetique;acidetrichloracetique;acidetrichloracetique(french)
CAS:76-03-9
MF:C2HCl3O2
MW:163.39
EINECS:200-927-2
Product Categories:Pharmaceutical intermediates;cosmetics materials;Denaturation;Solvent by Application;cosmetics chemical;intermediates;Acids and Bases;Analytical Reagents for General Use;Histological Solvents;Puriss p.a. ACS;Analytical Reagents;Analytical/Chromatography;Biochemicals and Reagents;T-Z;Biotech Solvents;Solvents
Mol File:76-03-9.mol
Trichloroacetic acid Structure
Trichloroacetic acid Chemical Properties
Melting point 54-58 °C (lit.)
Boiling point 196 °C (lit.)
density 1.62 g/mL at 25 °C (lit.)
vapor density <1 (vs air)
vapor pressure 1 mm Hg ( 51 °C)
refractive index n20/D 1.62(lit.)
Fp 196°C
storage temp. Store at +15°C to +25°C.
solubility H2O: 0.5 M at 20 °C, clear, colorless
pka0.7(at 25℃)
form Solid
color White
PH<1.0 (25℃, 0.5M in H2O)
Water Solubility 120 g/100 mL (20 ºC)
Sensitive Hygroscopic
λmax210nm(EtOH)(lit.)
Merck 14,9627
BRN 970119
Stability:Stable, but moisture sensitive. Incompatible with water, strong bases. Note that the Merck Index states that this material is hydrolytically unstable in aqueous solution below 30% by weight. Decomposition products include carbon monoxide and carbon dioxide. The generation of these gases in a sealed container may lead to a pressure rise sufficien
CAS DataBase Reference76-03-9(CAS DataBase Reference)
IARC2B (Vol. 63, 84, 106) 2014
NIST Chemistry ReferenceAcetic acid, trichloro-(76-03-9)
EPA Substance Registry SystemTrichloroacetic acid (76-03-9)
Safety Information
Hazard Codes Xn,N,C,F,Xi
Risk Statements 36/37/38-40-51/53-50/53-35-38-11-34-67-52/53
Safety Statements 26-36/37-61-60-45-36/37/39-24/25-16
RIDADR UN 1839 8/PG 2
WGK Germany 2
RTECS AJ7875000
10-21
Autoignition Temperature711 °C
Hazard Note Corrosive/Hygroscopic
TSCA Yes
HazardClass 8
PackingGroup II
HS Code 29154000
Hazardous Substances Data76-03-9(Hazardous Substances Data)
ToxicityLD50 orally in rats: 5000 mg/kg (Bailey, White)
MSDS Information
ProviderLanguage
TCA English
SigmaAldrich English
ACROS English
ALFA English
Trichloroacetic acid Usage And Synthesis
General DescriptionIt is briefly referred to as TCA. It appears as colorless or white orthorhombic crystal with strong deliquescence. It has slight special irritating smell with strong corrosiveness. The aqueous solution of TCA is strongly acidic, and the aqueous solution of 0.1 mol of solution having a pH of 1.2. TCA with concentration of 30% or less is difficult to be stored for a long period of time since it is gradually decomposed into chloroform, hydrogen chloride, carbon dioxide, carbon monoxide and the like. In dilute alkali, it will be hydrolyzed into chloroform and carbon dioxide. Formic acid is formed in concentrated alkali. It is a strong corrosion products with a oral LD50 being 3320mg / kg.
Trichloroacetic acid is a strong organic acid with a dissociation constant K = 3 × 10-2. It has lively chemical properties. Its sodium salt is easily subject to decarboxylation into chloroform. It will be reduced to alcohol upon coming across LiAlH4. It can have halogen replacement reaction with KBr:
ApplicationTrichloroacetic acid can be used as pharmaceutical raw materials, herbicides (potassium trichloroacetate and sodium trichloroacetate, etc.), textile dyeing auxiliaries, metal surface treatment agent and acid chloride, anhydride, amide, polyester, organometallic salt, water salicylaldehyde, chlorocarboxylic acid and the raw materials of other organic synthesis. 
In addition, in medicine, it can also be used as etherifying agents and keratolytics, bile pigment reagents and protein precipitation reagents. In the field of biochemistry, it can be used for separation analysis of biological phosphate compounds and reagents for determination of fluoride and lipid as well as microscopic fixative, decalcification, chromatography reagents.
The product is warts agent and astringent in pharmaceutical field, mainly used as biochemical drug extractant for the extraction of many highly efficient drugs such as adenosine triphosphate, cytochrome C and placental polysaccharides.
In addition, trichloroacetic acid, together with alkaline phenol, can be used for salicylaldehyde compound synthesis by ReimerTiemann reaction. It can also react with monoolefine compounds for synthesizing chlorocarboxylic acid [CCl3 (CH2CH2) nCOOH] .
Preparation
  1. Use acetic acid or monochloroacetic acid as raw material; gradually warm in the 100~ 150℃ in the presence of the light or catalyst (ferric chloride) for chlorination to obtain it.
  2. Use hydrated chloral hydrate as raw material; apply oxidation reaction using concentrated nitric acid to obtain it.
Chemical PropertiesTrichloroacetic acid is a colorless crystalline solid which is used in liquid solutions.
Chemical PropertiesTrichloroacetic acid, is a colorless crystalline solid. Trichloroacetic acid absorbs moisture from air and forms a syrup. Trichloroacetic acid is soluble in water with release of heat. Trichloroacetic acid is corrosive to metals and tissue.
UsesTraditionally used to precipitate protein. Has been used to determine protein concentration by quantitative precipitation. Used as decalcifier and fixative, as a laboratory reagent, a herbicide, in medicine, and in microscopy.
UsesTrichloroacetate (TCA) is used primarily for the selective control of annual and perennial grass weeds in cropland and noncropland. TCA is acidic in nature and are not strongly sorbed by soils. It is reported to be rapidly degraded in both soil and water by microbial processes. However, the breakdown of TCA occurs very slowly when incubated at 14–15 °C in acidic soils. iming not only accelerates this degradation but also increases the numbers of TCA-degrading bacteria.
UsesAs a reagent for albumin detection; in making herbicides. It is found as a by-product after chlorination of water containing humic materials.
DefinitionChEBI: A monocarboxylic acid that is acetic acid in which all three methyl hydrogens are substituted by chlorine.
Reactivity ProfileTrichloroacetic acid is a strong acid; when heated, in the presence of water, decomposes forming phosgene and HCl. [Handling Chemicals Safely 1980 p. 915]. The acid was added to copper wool and rinsed down with dimethyl sulfoxide. This caused what was thought to be an extremely exothermic dehydrohalogenation reaction that melted the neck of the flask, [Chem. Eng. News, 1981, 59(28), 4].
Health HazardTOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire HazardCombustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Safety ProfilePoison by ingestion and subcutaneous routes. Moderately toxic by intraperitoneal route. Questionable carcinogen with experimental carcinogenic data. Experimental reproductive effects. Mutation data reported. A corrosive irritant to skin, eyes, and mucous membranes. When heated to decomposition it emits toxic fumes of Cland Na2O. Used as an herbicide.
Potential ExposureThis haloacetic acid can be a byproduct of drinking water disinfection and may increase the risk of cancer. Trichloroacetic acid is used as medication; in organic syntheses; as a reagent for albumin detection; as an intermediate in pesticide manufacture and in the production of sodium trichloroacetate which is itself a herbicide.
CarcinogenicityTCA was not mutagenic in bacterial assays.The IARC has determined that there is limited evidence for the carcinogenicity of TCA in experimental animals and that it is not classifiable as to its carcinogenicity to humans. Neutralized TCA was not clastogenic in human lymphocytes in vitro or in the mouse bone marrow micronucleus test.
ShippingUN1839 (solid) & UN2564 (solution) Trichloroacetic acid, solid and Trichloroacetic acid, solution, Hazard class: 8; Labels: 8-Corrosive material.
Purification MethodsPurify the acid by fractional crystallisation from its melt, then crystallise it repeatedly from dry *benzene and store it over conc H2SO4 in a vacuum desiccator. It can also be crystallised from CHCl3 or cyclohexane, and dried over P2O5 or Mg(ClO4)2 in a vacuum desiccator. Trichloroacetic acid can be fractionally distilled under reduced pressure from MgSO4. Layne, Jaffé and Zimmer [J Am Chem Soc 85 435 1963] dried trichloroacetic acid in *benzene by distilling off the *benzene-water azeotrope, then crystallised the acid from the remaining *benzene solution. Manipulations should be carried out under N2. [Toxic vapours, use a well ventilated fume cupboard.] [Beilstein 2 IV 508.]
IncompatibilitiesIncompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, silver salts, strong acids, strong bases, moisture, iron, zinc, aluminum. Corrosive to iron, steel and other metals.
Referenceshttps://pubchem.ncbi.nlm.nih.gov/compound/trichloroacetic_acid#section=Top
https://en.wikipedia.org/wiki/Trichloroacetic_acid
Tag:Trichloroacetic acid(76-03-9) Related Product Information
Triclosan PERCHLORIC ACID Trifluoroacetic acid Phosphorus oxychloride Phosphorus trichloride TRICHLOROACETIC ACID, [1-14C] EGT isopropyl trichloroacetate [1-(4-CHLOROPHENYL)-1H-1,2,3-TRIAZOL-4-YL]METHYL 2,2,2-TRICHLOROACETATE MONURON TCA TRICHLOROACETIC ACID OCTYL ESTER(C8) Trichloroacetic-2-13C acid TRICHLOROACETIC ACID LAURYL ESTER(C12) Trichloroacetic acid anhydride (TCAA) trichloroacetic acid stearyl ester(C18),C18, Trichloroacetic acid stearyl ester FENURON TCA 1-(4-CHLOROBENZYL)-3-([(2,2,2-TRICHLOROACETYL)OXY]IMINO)-1,3-DIHYDRO-2H-INDOL-2-ONE methyl trichloroacetic acid