Product Name

Plant hormone Mepiquat chloride+chlormequat 

Function

Plant Growth Regulator

Specification

Mepiquat Chloride 3%+  chlormequat 22% 

CAS No.

24307-26-4+999-81-5

Empirical Formula

C7H16ClN+C5H13Cl2N

Toxicology

Oral Acute oral LD50 for rats 464 mg/kg.  Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Not irritating to skin and eyes (rabbits). Not a skin sensitiser.  Inhalation LC50 (7 h) for rats >3.2 mg/l air.  NOEL for rats 3000, mice 1000 ppm.  ADI 1.5 mg/kg b.w.  Toxicity class WHO (a.i.) III; EPA (formulation) II  EC classification Xn; R22| R52, R53 

Applications

Mode of action Plant growth regulator, absorbed and translocated throughout the plant.  Uses Used on cotton to reduce vegetative growth and to advance maturation of the bolls; and to inhibit sprouting in onions, garlic and leeks. Used in combination with ethephon to prevent lodging (by shortening the stem and strengthening the stem wall) in cereals, grass seed crops, and flax. Typical application rates in cotton and onions are 0.04 kg/ha, and in cereals 0.2-0.6 kg/ha.