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Diuron

Product Name:
Diuron
CAS No.
330-54-1
Chemical Name:
Diuron
CBNumber:
CB4163723
Molecular Formula:
C9H10Cl2N2O
Formula Weight:
233.09
MOL File:
330-54-1.mol
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Diuron Property

Melting point:
158-159°C
Boiling point:
180-190°C
Density 
1.48
vapor pressure 
2(x 10-7 mmHg) at 30 °C (Hawley, 1981)
refractive index 
1.5500 (estimate)
Flash point:
180-190°C
storage temp. 
APPROX 4°C
solubility 
In acetone: 5.3 wt % at 27 °C (Meister, 1988).
form 
neat
pka
-1 to -2 (quoted, Bailey and White, 1965)
color 
White, odorless crystalline solid
Water Solubility 
Slightly soluble. 0.0042 g/100 mL
Merck 
14,3382
BRN 
2215168
Henry's Law Constant
1.46(x 10-9 atm?m3/mol) at 25 °C (approximate - calculated from water solubility and vapor pressure)
Exposure limits
NIOSH REL: TWA 10 mg/m3.
Stability:
Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
InChIKey
XMTQQYYKAHVGBJ-UHFFFAOYSA-N
NIST Chemistry Reference
Urea, 3-(3,4-dichlorophenyl)-1,1-dimethyl-(330-54-1)
EPA Substance Registry System
Diuron (330-54-1)
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Safety

Hazard Codes 
Xn,N,F
Risk Statements 
22-40-48/22-50/53-36-20/21/22-11
Safety Statements 
13-22-23-37-46-60-61-2-36/37-26-16
RIDADR 
UN 3077 9/PG 3
WGK Germany 
3
RTECS 
YS8925000
TSCA 
Yes
HazardClass 
9
PackingGroup 
III
HS Code 
29242990
Hazardous Substances Data
330-54-1(Hazardous Substances Data)
Toxicity
LD50 orally in rats: 1690 mg/kg (Boyd, Krupa)
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N-Bromosuccinimide Price More Price(15)

Sigma-Aldrich Gold
Product number:
45463
Product name :
Diuron
Purity:
PESTANAL , analytical standard
Packaging:
250mg
Price:
$24.6
Updated:
2019/12/02
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Sigma-Aldrich Gold
Product number:
45851
Product name :
Diuron solution
Purity:
100 μg/mL in acetonitrile, PESTANAL , analytical standard
Packaging:
2ml
Price:
$51.1
Updated:
2019/12/02
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TCI Chemical Gold
Product number:
D1328
Product name :
3-(3,4-Dichlorophenyl)-1,1-dimethylurea
Purity:
>98.0%(N)
Packaging:
25g
Price:
$30
Updated:
2019/12/02
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TCI Chemical Gold
Product number:
D1328
Product name :
3-(3,4-Dichlorophenyl)-1,1-dimethylurea
Purity:
>98.0%(N)
Packaging:
500g
Price:
$235
Updated:
2019/12/02
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Alfa Aesar Gold
Product number:
L02986
Product name :
3-(3,4-Dichlorophenyl)-1,1-dimethylurea, 97%
Packaging:
250g
Price:
$144
Updated:
2019/12/02
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Diuron Chemical Properties,Usage,Production

Chemical Properties

White, odorless crystalline solid

Uses

Pre-emergent herbicide.

Uses

A phenyl urea herbicide. Pre-emergent herbicide.

Uses

Diuron is a urea compound used as a preemergence herbicide in soils to control germinating broad-leaved grasses and weeds in crops such as apples, cotton, grapes, pears, pineapple and alfalfa; sugar cane ?owering depressant.

Definition

ChEBI: A member of the class of ureas that is urea in which both of the hydrogens attached to one nitrogen are substituted by methyl groups, and one of the hydrogens attached to the other nitrogen is substituted by a 3,4-dichlorophenyl group.

General Description

Diuron is a white crystalline solid/wettable powder and used as a herbicide. Diuron is registered for pre- and post-emergent herbicide treatment of both crop and non-crop areas, as a mildewcide and preservative in paints and stains, and as an algaecide. Diuron is a substituted urea herbicide for the control of a wide variety of annual and perennial broad-leaved and grassy weeds on both crop and non-crop sites.
Thus, the application of diuron is wide for vegetation control and weed control in citrus orchards and alfalfa fields. The mechanism of herbicidal action is the inhibition of photosynthesis. Diuron was first registered in 1967. Products containing diuron are intended for both occupational and residential uses. Occupational uses include agricultural food and non-food crops; ornamental trees, flowers, and shrubs; paints and coatings; ornamental fish ponds and catfish production; and rights-of-way and industrial sites. Residential uses include ponds, aquariums, and paints.

Air & Water Reactions

Very slightly soluble in water.

Reactivity Profile

Diuron is incompatible with the following: Strong acids .

Health Hazard

INHALATION: May cause irritation of nose and throat. EYES: Irritation. SKIN: Moderately irritating to skin.

Health Hazard

Acute and chronic toxicity was found to be oflow order in experimental animals, administered by oral route; repeated doses producedanemia in rats; the LD50 data, however,reported in the literature significantly differ; moderately toxic by intraperitoneal route,while the inhalation risk is low because oflow vapor pressure. Susceptible to hydrolyzeto dichloroaniline in vivo, which can causemethemoglobinemia; no evidence of carcino-genicity in an 18-month study in mice at1400 ppm (Innes et al, 1969); no adverseeffect observed in rats in 2-year feeding studies at dietary concentration level of 250 ppm(ACGIH 1986); adverse reproductive effectsmay arise from chronic exposure to high con-centration level.
LD50 oral (rat): 1017 mg/kg (Lewis 1995)
LD50 oral (rat): 3400 mg/kg (Hodge et al1968)
LD LO intraperitoneal (mouse): 500 mg/kg.

Agricultural Uses

Herbicide: Diuron is a substituted urea herbicide used to control a wide variety of annual and perennial broadleaf and grassy weeds, as well as mosses. It is used on non-crop areas and many agricultural crops such as fruit, cotton, sugar cane, alfalfa, and wheat. Diuron works by inhibiting photosynthesis. It may be found in formulations as wettable powders and suspension concentrates.

Trade name

330541®; AF 101®; AI3-61438®; AMETRON SC®; BOUNDRY®[C]; CHEMIURON®[C]; CEKIURON®; CRISURON®; DAILON®; DIATER®; DI-ON®; DIREX®; DITOX®; DIUMATE® Diuron; DIUREX®,[C]; DIUROL® Diuron; DIURON 4L®; DMU®; DREXEL DIURON 4L®; DROPP ULTRA®; DURAN®; DYNEX®[C] FARMCO DIURON®; FORTEX SC®; FREEFLO®; GINSTAR®; HERBURON 500 BR®; HW 920®; KARMEX®[C]; K-4®; KARMEX DIURON HERBICIDE®; KARMEX DW®; KROVAR IDF®[C]; MARMER®; STRIKER®; SUP'R FLO®; TELVAR®; TIGREX®; TREVISSIMO®; UNIDRON®; UROX D®[C]; VONDURON®

Safety Profile

oneal routes. Questionable carcinogen with experimental tumorigenic and teratogenic data. Mutation data reported. When heated to decomposition it emits highly toxic fumes of Cland NOx. See also CHLOROPHENOLS.

Environmental Fate

Biological. Degradation of radiolabeled diuron (20 ppm) was not observed after 2 weeks of culturing with Fusarium and two unidentified microorganisms. After 80 days, only 3.5% of the applied amount evolved as 14CO2 (Lopez and Kirkwood, 1974). In 8 weeks, <20% of diuron in soil (60 ppm) was detoxified (Corbin and Upchurch, 1967). 3,4-Dichloroaniline was reported as a minor degradation product of diuron in water (Drinking Water Health Advisory, 1989) and soils (Duke et al., 1991).
Under aerobic conditions, mixed cultures isolated from pond water and sediment degraded diuron (10 μg/mL) to CPDU, 3,4-dichloroaniline, 3-(3,4-dichlorophenyl)-1methylurea, carbon dioxide and a monodemethylated product. The extent of biodegradation varied with time, glycerol concentration and microbial population. The degradation halflife was <70 days at 30°C (Ellis and Camper, 1982).
Thom and Agg (1975) reported that diuron is amenable to biological treatment with acclimation.
Soil. Several degradation pathways were reported. The major products and reaction pathways include formation of 1-methyl-3-(3,4-dichlorophenol) ur
Incubation of diuron in soils releases carbon dioxide (Madhun and Freed, 1987). The rate of carbon dioxide formation nearly tripled when the soil temperature was increased from 25 to 35°C. Reported half-lives in an Adkins loamy sand are 705, 414 and 225 d
The half-lives for diuron in field soils ranged from 133 to 212 days with an average half-life of 328 days (Hill et al., 1955). Hill et al. (1955) studied the degradation of diuron using a Cecil loamy sand (1 ppm) and Brookstone silty clay loam (5 ppm) in the laboratory maintained at 27°C and 60% relative humidity. In both soils, diuron was applied on four separate occasions over 22 weeks. In both instances, the investigators observed 40% of the applied amount degraded in both soils.
In a field application study, diuron did not leach below 5 cm in depth despite repeated applications or water addition (Majka and Lavy, 1977).
Groundwater. According to the U.S. EPA (1986) diuron has a high potential to leach to groundwater.

Purification Methods

Recrystallise it from 95% EtOH [Beck et al. J Am Chem Soc 108 4018 1986]. [Beilstein 12 IV 1263.]

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Diuron Suppliers

Global(228)Suppliers
Hubei YiKangYuan Chemical Co., Ltd.
Tel:
027-87182908;027-87182808
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027-87182900
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65824125@qq.com;65824125@qq.com
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92
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WUXI HONORSHINE CHEMICAL CO.,LTD.
Tel:
0510-83593312-
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0510-83574508
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sales@honorshinechem.com;
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61
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J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
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86-10-82849933
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
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China
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96815
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Alfa Aesar
Tel:
400-610-6006; 021-67582000
Fax:
021-67582001/03/05
Email:
saleschina@alfa-asia.com
Country:
China
ProdList:
30163
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84
TCI (Shanghai) Development Co., Ltd.
Tel:
021-67121386 / 800-988-0390
Fax:
021-67121385
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Sales-CN@TCIchemicals.com
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Beijing dtftchem Technology Co., Ltd.
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13651141086; 86(10)60275028、60275820
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Energy Chemical
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021-58432009
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Adamas Reagent, Ltd.
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Nanjing Chemlin Chemical Co., Ltd
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025-83697070
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+86-25-83453306
Email:
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Country:
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19992
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