Oxadiazon | 19666-30-9

Oxadiazon Properties

Melting point	88-90°C
Boiling point	417.0±55.0 °C(Predicted)
Density	1.4130 (rough estimate)
refractive index	1.6140 (estimate)
storage temp.	Sealed in dry,2-8°C
solubility	Chloroform (Slightly), Ethyl Acetate (Slightly)
pka	-2.73±0.40(Predicted)
form	Waxy Solid
color	Light yellow to yellow
Water Solubility	0.7mg/L(24 ºC)
BRN	558070
Henry's Law Constant	1.4×10² mol/(m³Pa) at 25℃, HSDB (2015)
InChI	1S/C15H18Cl2N2O3/c1-8(2)21-12-7-11(9(16)6-10(12)17)19-14(20)22-13(18-19)15(3,4)5/h6-8H,1-5H3
InChIKey	CHNUNORXWHYHNE-UHFFFAOYSA-N
SMILES	CC(C)Oc1cc(N2N=C(OC2=O)C(C)(C)C)c(Cl)cc1Cl
CAS DataBase Reference	19666-30-9(CAS DataBase Reference)
EWG's Food Scores	4
FDA UNII	C6U0E0YTP6
Proposition 65 List	Oxadiazon
NIST Chemistry Reference	Oxadiazon(19666-30-9)
Pesticides Freedom of Information Act (FOIA)	Oxadiazon
EPA Substance Registry System	Oxadiazon (19666-30-9)
UNSPSC Code	41116107
NACRES	NA.24

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS09
Signal word	Warning
Hazard statements	H410
Precautionary statements	P273-P391-P501
Hazard Codes	N
Risk Statements	50/53
Safety Statements	60-61
RIDADR	UN3077 9/PG 3
WGK Germany	2
RTECS	RO0874000
HS Code	29349990
Storage Class	11 - Combustible Solids
Hazard Classifications	Aquatic Acute 1 Aquatic Chronic 1
Hazardous Substances Data	19666-30-9(Hazardous Substances Data)
Toxicity	LD50 orally in rats, bobwhite quail, mallard duck: 8000, 6000, 1000 mg/kg (Lim)

Oxadiazon price More Price(20)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	CRM33382	Oxadiazon certified reference material, TraceCERT?, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland	19666-30-9	50MG	$69.6	2026-04-30	Buy
Sigma-Aldrich	33382	Oxadiazon PESTANAL	19666-30-9	100mg	$79	2026-04-30	Buy
TCI Chemical	O0655	Oxadiazon min. 98.0 %	19666-30-9	1G	$111	2026-04-30	Buy
TRC	TRC-O758510-500MG	Oxadiazon	19666-30-9	500mg	$177	2026-06-03	Buy
TRC	TRC-O758510-1G	Oxadiazon	19666-30-9	1g	$212	2026-06-03	Buy

Product number	Packaging	Price	Buy
CRM33382	50MG	$69.6	Buy
33382	100mg	$79	Buy
O0655	1G	$111	Buy
TRC-O758510-500MG	500mg	$177	Buy
TRC-O758510-1G	1g	$212	Buy

Oxadiazon Chemical Properties, Uses, Production

Chemical Properties

Pale Yellow Solid

Chemical Properties

Colorless crystalline solid. Odorless.

Uses

A commonly used herbicide/pesticide.

Uses

Herbicide.

Uses

Preemergence herbicide used for controlling certain annual grasses (e.g., bluegrass, barnyardgrass, crabgrass, goosegrass, sprangletop) and broad-leaved weeds (e.g., cudweed, dayflower, filaree, groundsel, jimsonweed, morningglory, mustards, pigweed, redmaids, smartweed, sowthistle, velvetleaf) in turf, lawns, orchards and ornamentals.

Definition

ChEBI: Oxadiazon is an aromatic ether.

General Description

Crystalline solid. Used as an herbicide.

Air & Water Reactions

Dust may form an explosive mixture in air.

Reactivity Profile

Oxadiazon is a diazo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides.

Trade name

CARPETMAKER®; CHIP SHOT®[C]; GOLD KIST®; PAR EX®; PRO GROW®; REGAL O-O®; REGALSTAR®; RONSTAR®; RP-17623®; TURFIC®; VERTAGREEN®; WILBRO

Mechanism of action

Selective with contact action. Inhibits protoporphyrinogen oxidase, leading to irreversible cell membrane damage.

Safety Profile

Moderately toxic by ingestion, inhalation, and skin contact. When heated to decomposition it emits toxic vapors of NOx and Clí.

Synthesis

124-38-9

N-[2,4-Dichloro-5-(1-methylethoxy)phenyl]-2,2-dimethylpropanehydrazonoyl chloride

51166-88-2

19666-30-9

To a 20 mL autoclave was added a stirrer, 0.2 mmol of pivaloyl chloride-2,4-dichloro-5-isopropoxyphenylhydrazone, 0.5 mmol of cesium fluoride, 0.24 mmol of 18-crown-6 and 2 mL of toluene. Carbon dioxide was passed until the pressure reached 2.0 MPa, and the reaction was stirred at 25°C for 24 hours. After the reaction was completed, the heating and stirring were stopped, and the unreacted carbon dioxide was slowly released after the system was cooled to room temperature. The reaction solution was transferred to a partition funnel, 15 mL of water was added and extracted three times with 15 mL of ethyl acetate. The organic phases were combined and washed sequentially with water and saturated saline. The organic phase was dried over anhydrous sodium sulfate and concentrated under reduced pressure to remove the solvent to obtain the crude product. The crude product was purified by column chromatography with the eluent of petroleum ether and ethyl acetate (30:1, v/v) to afford the target product 5-(tert-butyl)-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one in 88% yield.

Potential Exposure

An oxadiazolinone/oxidiazole preemergence and early postemergence herbicide used to control annual grasses, sedges, and broadleaf weeds. Originally registered for use on turf and ornamentals; has wide use on golf courses.

Environmental Fate

Soil. The reported half-life in soil is approximately 3–6 months (Hartley and Kidd, 1987). Oxadiazon degraded slowly in both moist and flooded soils. After 25 weeks, only 0.1–3.5% degraded to carbon dioxide and 0.5–1.1% as volatile products. Metabolites identified included oxadiazonphenol, oxadiazon acid and methoxyoxadiazon (Ambrosi et al., 1977).
Plant. Reported half-lives of oxadiazon in rice and orchard fruit are 1–2 and 3–6 months, respectively (Hartley and Kidd, 1987).

Shipping

UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9-Miscellaneous hazardous material, Technical Name Required.

Incompatibilities

Dust may form explosive mixture in air. Diazo compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. This chemical is sensitive to prolonged exposure to heat. This chemical is incompatible with strong oxidizing agents.

Toxics Screening Level

This inhalation potency results in an IRSL of 0.05 μg/m3 with annual averaging.

Waste Disposal

It is the responsibility of chemical waste generators to determine the toxicity and physical properties and of a discarded chemical and to properly identify its classification and certification as a hazardous waste, and to determine the disposal method. United States Environmental Protection Agency guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult and follow all regional, national, state, and local hazardous waste laws to ensure complete and accurate classification and disposal methods. Follow recommendations for the disposal of pesticides and pesticide containers. 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.
Do not discharge into drains or sewers. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. If allowed, incineration with effluent gas scrubbing is recommended. Containers must be disposed of properly by following package label directions or by contacting your local or federal environment

References

[1] Journal of Organic Chemistry, 2017, vol. 82, # 14, p. 7637 - 7642
[2] Patent: CN106866573, 2017, A. Location in patent: Paragraph 0073; 0074; 0075; 0076; 0077; 0078

Pesticide Type

Herbicide

Oxadiazon synthesis

Synthesis of Oxadiazon from Carbon dioxide and Pivaldehyde and (2,4-dichloro-5-isopropoxyphenyl)hydrazine

Oxadiazon Preparation Products And Raw materials

Raw materials

Xylene Toluene 2,4-Dichlorophenol Carbon tetrachloride Sodium nitrite

Pivaloyl chloride Phosgene Nitric acid EMULSIFIER Iron

Sulfuric acid

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Preparation Products

Acetochlor+Oxadiazon,E.C.

Oxadiazon Suppliers

Global Suppliers ( 245)

Supplier	Tel	Email	Country	ProdList	Advantage
J & K SCIENTIFIC LTD.	18210857532 18210857532	jkinfo@jkchemical.com	China	96815	76
Junkai (Tianjin) Chemical Co., Ltd	13920864700	sales@junkaichem.com	China	48	66
Chemsky（shanghai）International Co.,Ltd.	021-50135380	shchemsky@sina.com	China	32273	50
Sichuan Kulinan Technology Co., Ltd	400-1166-196 18981987031	cdhxsj@163.com	China	11674	57
Shanghai Sunway Pharmaceutical Technology Co., Ltd	13761987713	hxzheng@sunwaypharm.cn	China	8663	57
Spectrum Chemical Manufacturing Corp.	021-021-021-67601398-809-809-809 15221380277	marketing_china@spectrumchemical.com	China	9643	60
BOC Sciences	1-631-485-4226; 16314854226	info@bocsci.com	United States	9920	65
Chengdu Ai Keda Chemical Technology Co., Ltd.	4008-755-333 18080918076	800078821@qq.com	China	9706	55
T&W GROUP	021-61551611 13296011611	contact@trustwe.com	China	9884	58
Haoyuan Chemexpress Co., Ltd.	021-58950125	info@chemexpress.com	China	7545	61

Supplier	Advantage
J & K SCIENTIFIC LTD.	76
Junkai (Tianjin) Chemical Co., Ltd	66
Chemsky（shanghai）International Co.,Ltd.	50
Sichuan Kulinan Technology Co., Ltd	57
Shanghai Sunway Pharmaceutical Technology Co., Ltd	57
Spectrum Chemical Manufacturing Corp.	60
BOC Sciences	65
Chengdu Ai Keda Chemical Technology Co., Ltd.	55
T&W GROUP	58
Haoyuan Chemexpress Co., Ltd.	61

View Latest Price from Oxadiazon manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-07-14	Oxadiazon 19666-30-9		1kg	99	20tons	Qingdao Trust Agri Chemical Co.,Ltd
2025-06-27	Oxadiazon 19666-30-9		1KG	99%	500000kg	Hebei Chuanghai Biotechnology Co., Ltd
2019-07-06	Oxadiazon 19666-30-9	$1.00	1kg	99%		Career Henan Chemical Co

Oxadiazon
19666-30-9
$0.00
99
Qingdao Trust Agri Chemical Co.,Ltd

Oxadiazon
19666-30-9
99%
Hebei Chuanghai Biotechnology Co., Ltd

Oxadiazon
19666-30-9
$1.00
99%
Career Henan Chemical Co

Oxadiazon Spectrum

Oxadiazon(19666-30-9)MS Oxadiazon(19666-30-9)¹HNMR Oxadiazon(19666-30-9)¹³CNMR Oxadiazon(19666-30-9)IR1 Oxadiazon(19666-30-9)IR2

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1of4

2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-5-oxo-1,3,4-oxadiazoline Foresite 0xadiazon 1,3,4-Oxadiazol-2(3H)-one, 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)- 1,3,4-Oxazol-2(3H)-one, 3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)- 1,3,4-oxazol-2(3h)-one,3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dime 17623 RP 2-tert-Butyl-4-(2,4-dichloro-5-isopropyloxyphenyl)-1,3,4-oxadiazolin-5-one 3-(2,4-dichloro-5-isopropyloxy-phenyl)-delta(sup4)-5-(tert-butyl)-1,3,4-oxad 3-(2,4-Dichloro-5-isopropyloxy-phenyl)-delta⁴-5-(tert-butyl)-1,3,4-oxadiazoline-2-one 3,4-Oxadiazol-2(3H)-one,3-(2,4-dichloro-5-(1-methylethoxy)phenyl)-5-(1,1-dimethylethyl)-1 4-[2,4-dichloro-5-(1-methylethoxy)phenyl]-2-(1,1-dimethylethyl)-δ2-1,3,4-oxadiazolin-5-one 5-tert-Butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-one 5-tert-Butyl-3-(2,4-dichloro-5-isoproxyphenyl)-1,3,4-oxadiazol-2-one delta(sup2)-1,3,4-oxadiazolin-5-one,2-tert-butyl-4-(2,4-dichloro-5-isopropylo delta²-1,3,4-Oxadiazolin-5-one, 2-tert-butyl-4-(2,4-dichloro-5-isopropyloxyphenyl)- delta2-1,3,4-Oxadiazolin-5-one, 2-tert-butyl-4-(2,4-dichloro-5-isopropoxyphenyl)- G 315 iazoline-2-one OXADIAZON, 1GM, NEAT OXADIAZON, 100MG, NEAT OXADIAZON PESTANAL OXADIAZON PESTANAL 250 MG Oxadiazon in Acetone oxadiazon (bsi,iso,ansi,wssa,jmaf) 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3H)-one oxadiazon Oxadiazon,100 μL/mL in MeOH 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-5(4H)-one 3-(2,4-Dichloro-5-isopropyloxyphenyl)-5-tert-butyl-1,3,4-oxadiazol-2(3H)-one 5-(1,1-Dimethylethyl)-3-(2,4-dichloro-5-isopropyloxyphenyl)-1,3,4-oxadiazol-2(3H)-one 2-t-Butyl-4-(2, 4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazolin-5-one Oxadiazon 250mg [19666-30-9] Oxadiazon E.C. Ronstar E.C. 5-tert-butyl-3-(2,4-dichloro-5-iso-proposyphenyl)-1,3,4-oxadizaol-2-one 1,2,4-Oxadiazolidin-3,5-dione, 2-tert-butyl-4-(2,4-dichloro-5-isopropoxyphenyl) 5-tert-Butyl-3-(2,4-dichloro-5-propan-2-yloxyphenyl)-1,3,4-oxadiazol-2-one Kensogen Ti thylethyl)- RP 17623 RONSTAR ronstar 2g Ronstar 50W RONSTAR(R) Scotts OH I OXADIAZON Oxydiazon Oxadiazon Solution, 1000ppm HERBSTAR DOXAR 3-[2,4-dichloro-5-(1-methylethoxy)phenyl]-5-(1,1-dimethylethyl)-1,3,4-oxadiazol-2(3h)-one 2-tert-Butyl-4-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazolin-5-one 2-TERT-BUTYL-4-(2,4-DICHLORO-5-ISOPROPOXYPHENYL)-2-1,3,4-OXADIAZOLIN-5-ONE Lonster Oxadiazon(Ronstsr)93%/95%Tech,12.5%/25%Ec Oxadiazon @1000 μg/mL in MeOH OxadiazonSolution,100mg/L,1ml Oxadiazon @100 μg/mL in MeOH