SIDURON Property

Melting point:

135.5℃

Boiling point:

374.49°C (rough estimate)

Density 

1.0151 (rough estimate)

refractive index 

1.5110 (estimate)

storage temp. 

0-6°C

pka

12.38±0.40(Predicted)

form 

Powder

color 

Light gray

Water Solubility 

18mg/L(25 ºC)

Merck 

13,8561

BRN 

2725940

CAS DataBase Reference

1982-49-6

EPA Substance Registry System

Siduron (1982-49-6)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38-52/53

Safety Statements 

26-61

RIDADR 

UN3077 (solid); UN3082(liquid)

WGK Germany 

2

RTECS 

YT7350000

HS Code 

29242990

Hazardous Substances Data

1982-49-6(Hazardous Substances Data)

Toxicity

LC50 (48-hour) for carp 18 mg/L and Japanese goldfish 10–40 mg/L (Worthing and Hance, 1991); acute oral LD50 for rats >7,500 mg/kg (Ashton and Monaco, 1991), 5,000 mg/kg (RTECS, 1985).

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

SIDURON Chemical Properties,Usage,Production

Chemical Properties

Colorless or white crystalline solid or powder. Odorless. Commercial product is available as an emulsifi- able concentrate.

Uses

Selective preemergence herbicide used to control annual weed grasses and prevent growth of crabgrass, foxtail and barnyard grass in turf, cereals and other food crops.

Definition

ChEBI: Siduron is a member of ureas.

General Description

Siduron is a pre-emergence and post emergence phenylurea herbicide used for the control of annual grass weeds. Its mode of action involves the inhibition of photosynthesis.

Agricultural Uses

Herbicide: A pre-emergence herbicide used to control annual grasses, e.g., crabgrass, foxtail, and barnyard grass. Used on newly seeded or established turf and lawn grasses and as pre-emergence treatment to bare soil following spring seeding. Not listed for use in EU countries. Registered for use in the U.S.

Trade name

GREENFIELD®; GRO-TONE®[C]; H-1318®; TREY®; TUPERSAN®

Potential Exposure

A phenyl urea preemergence herbicide used to control annual grasses (e. g., crabgrass, foxtail, and barnyard grass) and on newly seeded or established turf and lawn grasses and as bare soil treatment following spring seeding.

Environmental Fate

Soil. A fungus and two Pseudomonas spp. isolated from soil degraded siduron to form the major metabolites: 1-(4-hydroxy-2-methylcyclohexyl)-3-(p-hydroxyphenyl)urea, 1-(4- hydroxy-2-methylcyclohexyl)-3-phenylurea and 1-(4-hydroxyphenyl)-3-(2-methycyclohexyl)urea (Belasco and Langsdorf, 1969).
Plant. After 8 days following absorption in barley plants, no metabolites were detected (Splittstoesser and Hopen, 1968).

Shipping

UN2767 Phenyl urea pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3002 Phenyl urea pesticides, liquid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Waste Disposal

Incinerate in a unit with efflu- ent gas scrubbing. Containers must be disposed of properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.