| Title:  Chlormequat Chloride CAS Registry Number:  999-81-5 CAS Name:  2-Chloro-N,N,N-trimethylethanaminium chloride Additional Names:  (2-chloroethyl)trimethylammonium chloride;  chlorocholine chloride;  choline dichloride;  CCC Manufacturers' Codes:  AC-38555 Trademarks:  Cycocel (BASF);  Cycogan (Makhteshim-Agan) Molecular Formula:  C5H13Cl2N Molecular Weight:  158.07 Percent Composition:  C 37.99%, H 8.29%, Cl 44.86%, N 8.86% Line Formula:  [ClCH2CH2N+(CH3)3]Cl- Literature References:  Prepn:  Kauffmann, Vorlander, Ber. 43, 2740 (1910); Freiss, Carville, J. Am. Chem. Soc. 76, 2260 (1954); H. Linser et al., AT 222145 (1962 to OSSW), C.A. 57, 7660f (1962).  Activity:  N. E. Tolbert, J. Biol. Chem. 235, 475 (1960); J. Namokar, Pesticides 11, 53 (1977).  Metabolism:  R. C. Blinn, J. Agric. Food Chem. 15, 984 (1967). Toxicity study:  G. Hennighausen, B. Wiegershausen, Acta Biol. Med. Ger. 27, 663 (1971). Properties:  White crystalline solid, mp 245° (dec).  Fish-like odor; very hygroscopic.  Sol in water, lower alcs.  Insol in ether, hydrocarbons.  Aq solns corrosive to metal.  LD50 in mice (mg/kg):  7 i.v., 54 orally (Hennighausen, Wiegershausen). Melting point:  mp 245° (dec) Toxicity data:  LD50 in mice (mg/kg):  7 i.v., 54 orally (Hennighausen, Wiegershausen) Use:  Plant growth regulator.  |