Chlormequat chloride (CCC)

TC & FORMULATION: 99%, 50%SL, 80%WP

Structure Formula  

NOMENCLATURE

chlormequat chloride

Common name chlormequat chloride (BSI, E-ISO, (m) F-ISO)

IUPAC name 2-chloroethyltrimethylammonium chloride 

Chemical Abstracts name 2-chloro-N,N,N-trimethylethanaminium chloride 

Other names chlorocholine chloride; CCC 

CAS RN [999-81-5]  EEC no. 213-666-4 

PHYSICAL CHEMISTRY

chlormequat chloride

Composition ³96% pure; tech. concentrate 750 g/l.  Mol. wt. 158.1  M.f. C5H13Cl2N  Form Colourless, extremely hygroscopic crystals, with a weak intrinsic odour; (tech., pale yellow crystals, with a fish-like odour). Usually produced as an aqueous solution.  M.p. c. 235 ºC  V.p. <0.001 mPa (25 ºC)  KOW logP = -1.59 (pH 7)  Henry 1.58 ´ 10-9 Pa m3 mol-1 (calc.)  S.g./density 1.141 (20 °C)  Solubility In water >1 kg/kg (20 ºC). In methanol >25, dichloroethane, ethyl acetate, n-heptane, and acetone <1, chloroform 0.3 (all in g/kg, 20 ºC).  Stability Extremely hygroscopic; aqueous solutions are stable. Decomposition starts at 230 °C. 

APPLICATIONS

chlormequat chloride

Biochemistry Gibberellin biosynthesis inhibitor.  Mode of action Plant growth regulator which inhibits cell elongation, hence shortening and strengthening the stem and producing a sturdier plant. Also influences the developmental cycle, leading to increased flowering and harvest. May also increase chlorophyll formation and root development.  Uses To increase resistance to lodging (by shortening and strengthening the stem) and to increase yields in wheat, rye, oats, and triticale; for wheat in Europe, applied at 0.8-1.6 kg/ha. Also used to promote lateral branching and flowering in azaleas, fuchsias, begonias, poinsettias, geraniums, pelargoniums, and other ornamental plants; to promote flower formation and improve fruit setting in pears, almonds, vines, olives, and tomatoes; to prevent premature fruit drop in pears, apricots, and plums; etc. Also used on cotton, vegetables, tobacco, sugar cane, mangoes, and other crops. Formulation types DP; SL.  Compatibility Should not be combined with dinoseb, cyanazine, or other contact herbicides.

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