EC number: 201-178-4 | CAS number: 79-11-8 . Dissociation constant; Viscosity; Additional physico-chemical information; Additional physico-chemical properties of nanomaterials . … Chloroacetic acid, industrially known as monochloroacetic acid (MCA), is the organochlorine compound with the formula ClCH 2 CO 2 H. This carboxylic acid is a useful building-block in organic synthesis. The dissociation equilibrium reaction for chloroacetic acid is: ClCH2COOH <-----> ClCH2COO(− ) + H(+), The acid-dissociation equilibrium constant is: Identifiers CAS Number. Nanomaterial agglomeration / aggregation; Nanomaterial crystalline phase; Nanomaterial crystallite and grain size; Nanomaterial aspect ratio / shape; Nanomaterial specific surface area; Nanomaterial Zeta potential Chloroethanoic acid . Systematic IUPAC name. General information; Classification & Labelling & PBT assessment; Manufacture, use & exposure Some impor- tant reactions that are used for industrial applications are as follows. As a result, chloro-acetic acid is a common synthetic organic intermediate, either as the acid itself or as an acid derivative (e.g., salt,ester,anhydride,acyl chloride, amide, hydrazide, etc.). Comparing the two, in the first one the negative charge is taken up mostly by the two oxygen atoms. Other names 2-Chloroacetic acid 2-Chloroethanoic acid. Name Formula K a1 pK a1 K a2 pK a2 K a3 pK a3 K a4 pK a4; Acetic acid: CH 3 CO 2 H: 1.75 × 10 −5: 4.756-----Arsenic acid: H 3 AsO 4: 5.5 × 10 −3: 2.26: 1.7 × 10 −7: 6.76: 5.1 × 10 −12: 11.29--Benzoic acid: C 6 H 5 CO 2 H: 6.25 × 10 −5: 4.204-----Boric acid In acetic acid, the anion produced by dissociation is CH3-COO-; in chloroacetic acid it is CH2Cl-COO-. Table 1. Chloroacetic acid. Chloroacetic acid EC Inventory, C&L Inventory, REACH pre-registration, Other, CAD - Chemical Agents Directive, Art. Chloroacetic acid Names Preferred IUPAC name. In the second there is also an electronegative chlorine atom nearby to draw more charge towards itself. Display Name: Chloroacetic acid EC Number: 201-178-4 EC Name: Chloroacetic acid CAS Number: 79-11-8 Molecular formula: C2H3ClO2 IUPAC Name: 2-chloroacetic acid