Description

Chloroacetic Acid (CAS 79-11-8) is a highly versatile and reactive organochlorine compound with the molecular formula C₂H₃ClO₂. This crystalline solid is widely used in organic synthesis, pharmaceuticals, and agrochemical production due to its strong carboxylic acid functionality and reactive alpha-chlorine atom. Available in high-purity grades (≥99%), our Chloroacetic Acid is rigorously tested for consistency, ensuring optimal performance in demanding applications. Proper handling is critical as it is corrosive and requires appropriate safety measures. Packaged in secure, chemically resistant containers to maintain stability and purity during storage and transport.

Properties

• CAS Number: 79-11-8
• Complexity: 42.9
• IUPAC Name: 2-chloroacetic acid
• InChI: InChI=1S/C2H3ClO2/c3-1-2(4)5/h1H2,(H,4,5)
• InChI Key: FOCAUTSVDIKZOP-UHFFFAOYSA-N
• LogP: log Kow = 0.22
• Exact Mass: 93.9821570
• Molecular Formula: C2H3ClO2
• Molecular Weight: 94.50
• SMILES: C(C(=O)O)Cl
• Topological: 37.3
• Monoisotopic Mass: 93.9821570
• Physical Description: Chloroacetic acid, solid is a colorless to light-brown crystalline material. It is soluble in water and sinks in water. Combustible. It is transported as a molten liquid and therefore can cause thermal burns. It is toxic by ingestion, skin absorption and inhalation of dust. It is corrosive to metals and tissue.
• Color/Form: Monoclinic prisms
• Odor: Strong vinegar-like odor
• Boiling Point: 372 °F at 760 mmHg
• Melting Point: 145 °F
• Flash Point: 302 °F
• Solubility: greater than or equal to 100 mg/mL at 68 °F
• Density: 1.4043 at 104 °F – Denser than water; will sink
• Vapor Density: 3.26 – Heavier than air; will sink
• Vapor Pressure: 1 mmHg at 109.4 °F
• Henry’s Law Constant: Henry’s Law constant = 9.26X10-9 atm-cu m/mole at 25 °C
• Stability/Shelf Life: Stable under recommended storage conditions.
• Autoignition Temperature: >932 °F
• Heat of Combustion: -715.9 kJ/mol
• Heat of Vaporization: 250 Btu/Lb = 139 cal/g = 5.82X10+5 J/kg
• Surface Tension: 35.17 dyn/cm at 100 °C
• Odor Threshold: Odor Threshold Low: 0.04 [ppm]
• Refractive Index: Index of refraction: 1.4351 at 55 °C/D
• Dissociation Constants: pKa = 2.87
• Synonyms: chloroacetic acid, Monochloroacetic acid, 79-11-8, 2-chloroacetic acid, Chloracetic acid, Chloroethanoic acid, Acetic acid, chloro-, Acide chloracetique, Monochloroethanoic acid, Monochloracetic acid, Monochloorazijnzuur, Monochloressigsaeure, Acidomonocloroacetico, 2-chloro-acetic acid, Acide monochloracetique, Acide chloroacetique, Kyselina chloroctova, Acetocaustin, 2-chloro-ethanoic acid, Caswell No. 179B, Chloroacetic acid [BSI:ISO], NSC 142, NCI-C60231, monochloro acetic acid, CCRIS 2117, HSDB 939, Monochloroacetic acid [BSI:ISO], EINECS 201-178-4, EPA Pesticide Chemical Code 279400, UNII-5GD84Y125G, BRN 0605438, DTXSID4020901, CHEBI:27869, AI3-25035, NSC-142, 5GD84Y125G, alpha-chloro-acetic acid, DTXCID20901, EC 201-178-4, 4-02-00-00474 (Beilstein Handbook Reference), MONOCHLOROACETIC ACID (MART.), MONOCHLOROACETIC ACID [MART.], MCAA, Chloressigsauer, Chlorethansauere, Monochloor azijnzuur, Acidomono chloroacetico, Acide monochloroacetique, 201-178-4, Chloroacetic acid, solid, Chloroacetic, Acetic acid, 2-chloro-, .alpha.-Chloroacetic acid, Monochloorazijnzuur [Dutch], Acide chloracetique [French], Kyselina chloroctova [Czech], Monochloressigsaeure [German], Acide chloroacetique [French], alpha-Chloroacetic acid, Acidomonocloroacetico [Italian], Acide monochloracetique [French], Chloroacetic acid, molten, Acide chloracetique [ISO-French], Chloroacetic acid (80% or less), chloro-acetic acid, Acetocaustin (TN), CH2ClCOOH, CHLOROACETIC-ACID, MFCD00002683, Monochloracetic acidacide monochloracetique, Chloroacetic acid, liquid, CHLOROACETIC ACID CRYSTALLINE, Chloroacetic acid, molten [UN3250] [Poison], Chloroacetic acid, solid [UN1751] [Poison], Acide chloracetique (ISO-French), sJPhLQDIKTp@, UN1750, UN1751, UN3250, CHLOROACETIC ACID, ACS, cloroacetic acid, chloro acetic acid, R3W, ClCH2COOH, monochloro-acetic acid, Chloroacetic acid, 99%, Chloroacetic acid, solid [UN1751] [Poison], bmse000367, WLN: QV1G, Chloroacetic acid, molten [UN3250] [Poison], Chloroacetic acid, >=99%, NCIOpen2_002217, SCHEMBL19089, SCHEMBL23160, Chloroacetic acid, ACS grade, MLS001065621, BIDD:ER0630, CHEMBL14090, CHLOROACETIC ACID [MI], NSC142, SCHEMBL3281250, CHLOROACETIC ACID [ISO], Chloroacetic acid, solid (dot), CHLOROACETIC ACID [HSDB], FOCAUTSVDIKZOP-UHFFFAOYSA-, CHLOROACETIC ACID [VANDF], BCP20585, MSK70013, NSC42970, STR00326, Tox21_201114, BBL037260, LMFA01090068, MONOCHLOROACETIC ACID [VANDF], NSC-42970, STL197882, Chloroacetic acid, analytical standard, AKOS000118920, MONOCHLOROACETIC ACID [WHO-DD], UN 1751, CAS-79-11-8, NCGC00091473-01, NCGC00091473-02, NCGC00091473-03, NCGC00258666-01, SMR000568484, Chloroacetic acid, for synthesis, 99.0%, Chloroacetic acid, ACS reagent, >=99.0%, Chloroacetic acid, purum, >=97.0% (T), C2123, NS00003112, Chloroacetic acid, puriss., >=99.0% (T), EN300-16767, C06755, D07677, Chloroacetic acid, JIS special grade, >=99.0%, Q409013, Chloroacetic acid, PESTANAL(R), analytical standard, F2190-0289, InChI=1/C2H3ClO2/c3-1-2(4)5/h1H2,(H,4,5), Chloroacetic acid 1000 microg/mL in Methyl-tert-butyl ether

Application

Chloroacetic Acid serves as a key intermediate in the synthesis of carboxymethylcellulose (CMC), herbicides like 2,4-D and 2,4,5-T, and pharmaceuticals such as glycine derivatives. It is also used in the production of dyes, surfactants, and thioglycolic acid. In biochemistry, it acts as a protein precipitant and preservative. Industrial applications include the manufacture of adhesives and textile auxiliaries.

Safety and Hazards

GHS Hazard Statements

• H301: Toxic if swallowed [Danger Acute toxicity, oral]
• H311: Toxic in contact with skin [Danger Acute toxicity, dermal]
• H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
• H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
• H330: Fatal if inhaled [Danger Acute toxicity, inhalation]
• H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]

Precautionary Statements

• P260, P261, P262, P264, P264+P265, P270, P271, P273, P280, P284, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P320, P321, P330, P361+P364, P363, P391, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (> 99.9%)
• Acute Tox. 3 (99%)
• Skin Corr. 1B (100%)
• Eye Dam. 1 (57.9%)
• Acute Tox. 2 (42%)
• Acute Tox. 3 (57.7%)
• STOT SE 3 (58.5%)
• Aquatic Acute 1 (100%)
• Aquatic Chronic 1 (19.4%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.