Title: Chlorpropham
CAS Registry Number: 101-21-3
CAS Name: (3-Chlorophenyl)carbamic acid 1-methylethyl ester
Additional Names: m-chlorocarbanilic acid isopropyl ester; isopropyl-m-chlorocarbanilate; isopropyl N-(3-chlorophenyl)carbamate; chloro-IPC; chloropropham; CIPC
Trademarks: Chlor-IFC; Furloe (PPG); Sprout-Nip (PPG)
Molecular Formula: C10H12ClNO2
Molecular Weight: 213.66
Percent Composition: C 56.21%, H 5.66%, Cl 16.59%, N 6.56%, O 14.98%
Literature References: Prepn: E. D. Witman, US 2695225; Strain, US 2734911 (1954, 1956 both to Columbia-Southern Chem.); Brockway, US 2806051 (1957 to B. F. Goodrich). Toxicology: E. M. Boyd, E. Carsky, Arch. Environ. Health 19, 621 (1969).
Properties: Solid, mp 40.7-41.1°. bp2 149°. nD20 1.5388. Commercial product is a liquid. Slightly sol in water; miscible with most oils and organic solvents. LD50 orally in rats: 1.2 g/kg (Boyd, Carsky).
Melting point: mp 40.7-41.1°
Boiling point: bp2 149°
Index of refraction: nD20 1.5388
Toxicity data: LD50 orally in rats: 1.2 g/kg (Boyd, Carsky)
Use: Herbicide; plant growth regulator.
Chlorprothixene Chlorpyrifos Chlorquinaldol Chlorsulfuron Chlortetracycline

CAS number 101-21-3
Molecular formula C10H12ClNO2
Molar mass 213.66
Appearance beige to brown solid
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Chlorpropham (commercial names: Bud Nip, Taterpex) is a plant growth regulator and herbicide used as a sprout suppressant for grass weeds, alfalfa, lima and snap beans, blueberries, cane fruit, carrots, cranberries, ladino clover, garlic, seed grass, onions, spinach, sugar beets, tomatoes, safflower, soybeans, gladioli and woody nursery stock. It is also used to inhibit potato sprouting and for sucker control in tobacco. Chlorpropham is available in emulsifiable concentrate and liquid formulations.

Chlorpropham is within the maximum residue limit regulation in Germany germination inhibitors approved for the treatment of potatoes for the purpose of preservation after harvest. Chlorpropham products are approved as a germination inhibitor for potatoes in Germany, Austria and Switzerland.