Chlorpropham CAS:101-21-3

  • Product Name:Chlorpropham
  • CAS:101-21-3
  • Molecular formula:C10H12ClNO2
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Chlorpropham CAS:101-21-3

Chlorpropham CAS:101-21-3 Basic information

Product Name: Chlorpropham
Synonyms: (3-chlorophenyl)carbamicacid,1-methylethylester;(3-Chlorophenyl)carbamicacid1-methylethylester;1-methylethyl(3-chlorophenyl)carbamate;3-Chlorocarbanilic acid, isopropyl ester;3-chlorocarbanilicacid,isopropylester;Atlas CIPC 40;budnip;bud-nip
CAS: 101-21-3
MF: C10H12ClNO2
MW: 213.66
EINECS: 202-925-7
Product Categories: ACTIVE AGROCHEMICAL INGREDIENTS;PLANT GROWTH REGULATOR;2005/70/EU;C;CarbanilateAlphabetic;CHMethod Specific;European Community: ISO and DIN;Herbicides;Pesticides&Metabolites;CPesticides&Metabolites;Alpha sort;CH;Amides;Building Blocks;C8 to C20+;Car
Mol File: 101-21-3.mol

Chlorpropham CAS:101-21-3 Chemical Properties

density: 1.18
Melting point: 41°C
Boiling point: 247°C
form: crystalline
storage temp.: APPROX 4°C
Water Solubility: 0.009 g/100 ml very poor
refractive index: nD20 1.5388
pka: 13.06±0.70(Predicted)
BRN: 2211397
Fp: 247°C
NIST Chemistry Reference: Chlorpropham(101-21-3)
Merck: 14,2187
Stability: Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
CAS DataBase Reference: 101-21-3(CAS DataBase Reference)
EPA Substance Registry System: Chlorpropham (101-21-3)

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White crystalline powder

Assay %


Infrared spectrometry



Accords with the enterprise standard

Chlorpropham Usage And Synthesis
Physicochemical propertiesA solid with low melting point of 41.4 ℃. The density is d30 1.180 and the refractive index is nD20 (after cooling) 1.5395.At 25 C, the solubility in the water is 89mg/L, and the degree of melting in the oil is medium (10% in the kerosene). It can be mixed with the lower alcohols, aromatics and most organic solvents. The purity of the industrial product is 98.5%, and the melting point is 38.5 ~ 40℃. Stable at lower than 100 C, but slowly hydrolyzed in acid and alkaline medium.
ToxicityThe acute oral administration of LD50 is 5 ~ 7.5g/kg in rats, and the acute oral administration is 5g/kg in rabbits. The drug had no toxic effect on rabbit skin for 20 hours or 2g/ kg feed for rats and dogs for 2 years. The acute oral administration is LD50>2g/kg for wild ducks. The TLm (48 hours) of goldfish and carp (48 hours) is 10 ~ 40mg/L.
Mechanism of actionMitotic inhibitor, in many perennial crops and some annual crops, it can be used alone or with other herbicides as pre-emergent selective weed removal. It is a plant growth regulator as well as a herbicide. It inhibits the activity of beta amylase, inhibits the synthesis of RNA and protein, interferes with oxidative phosphorylation and photosynthesis, and destroys cell division. Chloraniline is volatile. The steam can be absorbed by the bud in order to suppress weed bud growth. The residual effect in soil was longer than that of aniline, and the selectivity for some crops was smaller than that of aniline. In addition, it also regulates the growth of plants. It is used to inhibit the germination of potatoes during storage, flower and fruit thinning etc..
Applicable cropsAlfalfa, wheat, corn, soybean, sunflower, potato, sugar beet, rice, carrots, spinach, onions, etc..
Prevention and control objectAnnual grasses and certain broadleaf weeds including ryegrass, barnyard grass, bluegrass, purslane, chickweed and Tusizi etc. annual grasses and certain broadleaf weeds.
Usage methodThe amount of effective components is 2.24 ~ 4.5kg per hectare per hectare below 16 C in pre seedling soil treatment. Double the amount above 24 centigrade and mix soil after application. The post seedling treatment is 1.2 ~ 3.5kg. For the post seedling treatment, the activity of herbicide is poor. But it can control amaranth and Polygonum, chickweed and purslane in the seedling. As a growth regulator, it is used to inhibit the germination of potatoes.

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