BARBAN Chemical Properties

Melting point:

75-76℃

Boiling point:

340.8±32.0 °C(Predicted)

Density 

1.403

refractive index 

1.6070 (estimate)

storage temp. 

0-6°C

form 

Powder/Solid

pka

12.30±0.70(Predicted)

color 

White

Water Solubility 

11mg/L(25 ºC)

Merck 

13,962

BRN 

2376181

EPA Substance Registry System

Barban (101-27-9)

Safety Information

Hazard Codes 

Xn,N

Risk Statements 

22-43-50/53

Safety Statements 

24-36/37-60-61

RIDADR 

UN3077 9/PG 3

WGK Germany 

3

RTECS 

FD7700000

HS Code 

29242990

Hazardous Substances Data

101-27-9(Hazardous Substances Data)

Toxicity

LD50 orally in rats: 600 mg/kg (Bailey, White)

BARBAN Usage And Synthesis

Chemical Properties

Crystalline solid; melts at 75°C (167°F);insoluble in water [11 mg/L at 25°C (77°F)];slightly soluble in hexane; soluble in benzeneand chlorinated hydrocarbons.

Chemical Properties

Whitecrystallinesolid;meltsat75°C(167°F);insoluble in water, dissolves in benzene,toluene, and ethylene dichloride; hydrolyzedby acids and alkalies; alkaline hydrolysis liberates terminal chlorine atom.

Uses

Barban is used as a selective herbicide forwild oats.

Uses

Selective herbicide for wild oats.

Definition

ChEBI: A carbamate ester that is 4-chlorobut-2-yn-1-yl ester of N-(3-chlorophenyl)carbamic acid. A herbicide, it is no longer approved for use within the European Community.

General Description

Crystalline solid. Water solubility is 11 ppm at 20°C. Used as a selective herbicide.

Air & Water Reactions

Hydrolyzed by strong acid or base.

Reactivity Profile

BARBAN is a carbamate ester. Carbamates are chemically similar to, but more reactive than amides. Like amides they form polymers such as polyurethane resins. Carbamates are incompatible with strong acids and bases, and especially incompatible with strong reducing agents such as hydrides. Flammable gaseous hydrogen is produced by the combination of active metals or nitrides with carbamates. Strongly oxidizing acids, peroxides, and hydroperoxides are incompatible with carbamates.

Health Hazard

Moderately toxic by ingestion and inhalation;absorption through skin may be very slowand, therefore, almost nontoxic by dermalroute; used as a herbicide, rather than as apesticide; toxic symptoms are those of othercarbamate esters;
LD50 oral (rat): 600 mg/kg
LD50 skin (rabbit): >20,000 mg/kg.

BARBAN(101-27-9)Related Product Information

• (-)-MENTHYL CHLOROFORMATE
• 2-Butyne
• BARBAN SOLUTION 100UG/ML IN METHANOL 1ML
• BARBAN SOLUTION 100UG/ML IN METHANOL 5X1ML
• BARBAN SOLUTION 100UG/ML IN METHANOL 5ML
• 3-Chloropropyne
• N-(3-CHLOROPHENYL)URETHANE
• 4-CHLORO-2-BUTYN-1-OL
• BARBAN