19666-30-9 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 19666-30-9 differently. You can refer to the following data:
1. Pale Yellow Solid
2. Colorless crystalline solid. Odorless.
Uses
Different sources of media describe the Uses of 19666-30-9 differently. You can refer to the following data:
1. A commonly used herbicide/pesticide.
2. Herbicide.
3. 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.
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
Safety Profile
Moderately toxic by ingestion, inhalation, and skin contact. When heated to decomposition it emits toxic vapors of NOx and Clí.
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.
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
Check Digit Verification of cas no
The CAS Registry Mumber 19666-30-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,6 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19666-30:
(7*1)+(6*9)+(5*6)+(4*6)+(3*6)+(2*3)+(1*0)=139
139 % 10 = 9
So 19666-30-9 is a valid CAS Registry Number.
InChI:InChI=1/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
19666-30-9Relevant articles and documents
One-pot synthesis of 1,3,4-oxadiazol-2(3H)-ones with CO2 as a C1 synthon promoted by hypoiodite
Yang, Na,Yuan, Gaoqing
, p. 6639 - 6644 (2019/07/16)
A convenient and efficient route has been developed to synthesize 1,3,4-oxadiazol-2(3H)-ones from CO2, hydrazines and aryl or aliphatic aldehydes. Promoted by hypoiodite (IO-) generated in situ from KI and oxidant TBHP, the one-pot synthesis could proceed smoothly to afford the desired products in moderate to high yields. Mechanism studies revealed that nitrile imine was an important intermediate in this transformation. Notably, a commercial herbicide Oxadiazon could be successfully synthesized by this route.
Method for synthesizing 1,3,4-oxadiazole-2-one compounds of oxadiazon and the like by carbon dioxide
-
Paragraph 0073; 0074; 0075; 0076; 0077; 0078, (2017/07/20)
The invention discloses a method for synthesizing 1,3,4-oxadiazole-2-one compounds of oxadiazon and the like by carbon dioxide. The method comprises: adding an acyl halide hydrazone raw material and a solvent into a high-pressure autoclave; using alkali and an additive as accelerants, introducing carbon dioxide, and performing a stirring reaction for 6 to 24 hours at a temperature of 0 to 70 DEG C; after finishing the reaction, cooling to the room temperature; slowly releasing the unreacted carbon dioxide; after adding water to dilute reaction liquid, carrying out extraction by ethyl acetate; concentrating to obtain a crude product; purifying by column chromatography to obtain the 1,3,4-oxadiazole-2-one compounds. The method disclosed by the invention uses the carbon dioxide for replacing conventional phosgene and carbon monoxide, is safe and simple to operate, low in toxicity, friendly to the environment, simple and easy for obtaining reaction raw materials and reagents, wide in universality of a type of a reaction substrate, simple in post-processing process, high in target product yield and beneficial to industrial production, and is widely applied in synthesis of pesticides, medicines and natural products.
HERBICIDAL COMPOSITIONS AND METHOD OF USING THE SAME
-
, (2008/06/13)
Herbicidal compositions containing as the active ingredients one or more compounds selected from among light-inducing herbicidal compounds and one or more compounds selected from among organoposphorus herbicidal compounds, characterized by containing ethylenediamine alkoxylates and alcohol alkoxylates as surfactants. These herbicidal compositions have an excellent rapid action and exert a remarkable herbicidal effect in a small dose.
