Chlormequat Chloride CAS 999-81-5

Known as the first plant growth retardant to be used on plants, Chlormequat Chloride was first discovered by chemistry professor Dr. N.e. Tolbert at Michigan State University in the late 1950s. Dr. Tolbert first experimented with wheat crops, to which he applied Chlormequat Chloride. His experiments resulted in thicker stems and shorter plants.

Nowadays, Chlormequat Chloride is commonly used in nurseries to slow down stem growth while encouraging flowering in ornamental plants and flowers.

In addition to Chlormequat Chloride, Paclobutrazol and Daminozide are similar plant growth regulators (PGRs) that are present in a number of popular products on the market and are used by a significant percentage of growers in the indoor gardening industry. Their safety regularly gets called into question by conscientious growers looking for a purer end product.

Product name: Chlormequat chloride
Alias: 2-Chloroethyl-trimethyl ammonium; 2-chloro-N,N,N-trimethylethanaminium chloride;
EINECS NO: 213-666-4
Molecular formula: C5H13Cl2NO
Molecular weight: 174.0688
Assay: 98% TC
Melting point: 239-243℃
Packing: 25kg/ woven bag; or 200kg/plastic drum
CAS NO.: 999-81-5


1) Chlormequat chloride is a low poisonous plant growth regulator, it can be absorbed through leaves, branches, buds, the root system and seeds, control the plant excessive growth and cut down the knot of plant to be short, strong, coarse, root system to prosper and resist lodging.

2)Chlormequat chloride makes leaves will be greener and thicker,the content of chlorophyll will increase and the photosynthesis will reinforce, which can improve the ratio of set fruit with better quality and higher yield.

3) Chlormequat chloride can also improve the plant ability to the environment-adjustment, such as drought-resistance, frigidity-resistance, disease and pests-resistance and salinization-resistance .

4)Chlormequat chloride can be used as the additives in fertilizers such as water flush fertilizer, folia fertilizer, root fertilizer and so on, to raise the absorption to the nutrition and the plant growth.