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Oxamyl

Product Name
Oxamyl
CAS No.
23135-22-0
Chemical Name
Oxamyl
Synonyms
oxamil;Blade;d 1410;d-1410;VYDATE;OXAMYL;dpx1410;vydateg;vydatek;vydatel
CBNumber
CB7311293
Molecular Formula
C7H13N3O3S
Formula Weight
219.26
MOL File
23135-22-0.mol
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Oxamyl Property

Melting point:
100°C
Density 
0.9700
vapor pressure 
5.1×10-5Pa (25 °C)
refractive index 
1.6630 (estimate)
storage temp. 
0-6°C
solubility 
Chloroform: Slightly Soluble,Methanol: Slightly Soluble
pka
10.48±0.46(Predicted)
Water Solubility 
28 g/100 mL
BRN 
2212753
Stability:
Hygroscopic
CAS DataBase Reference
23135-22-0(CAS DataBase Reference)
NIST Chemistry Reference
Oxamyl(23135-22-0)
EPA Substance Registry System
Oxamyl (23135-22-0)
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Safety

Hazard Codes 
T+;N,N,T+
Risk Statements 
21-26/28-51/53
Safety Statements 
36/37-45-61
RIDADR 
UN 2811
WGK Germany 
3
RTECS 
RP2300000
HazardClass 
6.1(a)
PackingGroup 
I
Hazardous Substances Data
23135-22-0(Hazardous Substances Data)
Toxicity
LD50 orally in rats: 5 mg/kg (Fahmy)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H312Harmful in contact with skin

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
36184
Product name
Oxamyl
Purity
PESTANAL
Packaging
100mg
Price
$97.8
Updated
2022/05/15
Cayman Chemical
Product number
25609
Product name
Oxamyl
Purity
≥98%
Packaging
50mg
Price
$55
Updated
2023/06/20
Cayman Chemical
Product number
25609
Product name
Oxamyl
Purity
≥98%
Packaging
100mg
Price
$87
Updated
2023/06/20
TRC
Product number
O845140
Product name
Oxamyl
Packaging
100mg
Price
$70
Updated
2021/12/16
Medical Isotopes, Inc.
Product number
41834
Product name
Oxamyl
Packaging
1g
Price
$610
Updated
2021/12/16
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Oxamyl Chemical Properties,Usage,Production

Description

Oxamyl, is also called N,N-dimethyl-2-methylcarbamoyloxyimino- 2-(methylthio)acetamide (IUPAC), consists of colorless crystals, which are readily soluble in water, methanol, ethanol, acetone, and fairly soluble in toluene. Oxamyl is produced by chlorination of the oxime of methylglycolate, reaction with methanethiol and alkali, and conversion to the carbamate with methyl isocyanate.

Uses

Oxamyl is a pesticide used in the treatment and protection of crops from parasites and insects.

Uses

Insecticide, nematocide, acaricide.

Uses

Oxamyl is a broad spectrum systemic insecticide/nematicide. It exhibits both oral and contact toxicity to control both sucking and chewing insects and mites in a wide variety of row crops, fruits, vegetables and ornamentals.

Definition

ChEBI: Oxamyl is a carbamate ester. It has a role as an EC 3.1.1.7 (acetylcholinesterase) inhibitor, a carbamate insecticide, an acaricide, an antinematodal drug and an agrochemical. It is functionally related to a methylcarbamic acid.

Agricultural Uses

Insecticide, Nematicide, Acaricide: A systemic and contact insecticide/acaricide and nematicide, oxamyl is a restricted use pesticide used on apples, bananas, carrots, celery, citrus, cotton, cucumbers, eggplants, garlic, ginger, muskmelon (including cantaloupe and honeydew melon), onion (dry bulb), peanuts, pears, peppers, peppermint, pineapples, plantains, potatoes, pumpkins, soybeans, spearmint, squash, sweet potatoes, tobacco, tomatoes, watermelons, yams. Oxamyl is also used on non-bearing apple, cherry, citrus, peach, pear, and tobacco. It is applied directly onto plants or the soilsurface. It is available in both liquid and granular form, but the granular form is banned in the U.S. It has no residential use. Registered for use in EU countries[115

Trade name

BLADE®; D-1410®; DPX 1410®; INSECTICIDE-NEMACIDE 1410®; OXAMYL CARBAMATE INSECTICIDE®; THIOXAMYL®; VYDATE®; VYDATE® 10G; VYDATE L®; VYDATE INSECTICIDE/NEMATICIDE®; VYDATE OXAMYL INSECTICIDE/NEMATOCIDE®[C]

Safety Profile

Poison by ingestion, skin contact, and inhalation. Experimental reproductive effects. Moderately toxic by skin contact. When heated to decomposition it emits very toxic fumes of NOx and SOx

Potential Exposure

Oxamyl is a white crystalline solid. Sulfur or garlic-like odor. Molecular weight=219.3

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Obtain authorization and/or further instructions from thelocal hospital for administration of an antidote or performance of other invasive procedures. Transport to a thehealth-care facility.

Environmental Fate

Soil. Oxamyl rapidly degraded in a loamy sand and fine sand soil at 25°C to carbon dioxide and the intermediate methyl N-hydroxy-N,N-dimethyl-1-thiooxaminidate (Rajagopol et al., 1984). The reported half-life in soil is approximately one week (Worthing and Hance, 1991). Ou and Rao (1986) reported a half-life in soil of 8–50 days. The reported half-lives of oxamyl in Pitstone, Devizes, Sutton Veany and Mepal soils at 15°C were reported to be 10.2–13.1, 6.2, 7.1 and 17.8 days, respectively (Bromilow et al., 1980). Smelt et al. (1987) reported that oxamyl degraded at a higher rate in field plots after repeated applications of this nematocide than in soils that received no treatment. The repeated applications of oxamyl to soils probably induced microbial activity, which resulted in the accelerated disappearance of this compound.
Harvey and Han (1978) reported a half-life of 8 days for oxamyl in soil.
Groundwater. According to the U.S. EPA (1986) oxamyl has a high potential to leach to groundwater.
Plant. Dislodgable residues of oxamyl on cotton leaf 0, 24, 48, 72 and 96 hours after application (0.41 kg/ha) were 1.5, 1.1, 1.2, 0.85 and 0.76 mg/m2, respectively (Buck et al., 1980).
Chemical/Physical. The hydrolysis half-lives of oxamyl in a sterile 1% ethanol/water solution at 25°C and pH values of 4.5, 6.0, 7.0 and 8.0, were 300, 17, 1.6 and 0.20 weeks, respectively (Chapman and Cole, 1982). Under alkaline conditions, oxam

Metabolic pathway

Oxamyl degrades in soils, plants and animals following common metabolic pathways. Primary degradation reactions include the hydrolysis of the carbamate ester to yield the corresponding oxyimidothioate and nitrile. Other major metabolic reactions include N-demethylation and the hydration/oxidation of the nitriles to the corresponding amides and acids. The majority of the oxamyl metabolites are recovered as conjugates in plants and animals. No metabolites containing the oxidised thiomethyl group were observed. The primary degradation/metabolic pathways of oxamyl are presented in Scheme 1.

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Store in tightly closed containers in a cool, wellventilated area away from heat and light. Where possible,automatically transfer material from drums or other storagecontainers to process containers.

Shipping

UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required. UN2991 Carbamate pesticides, liquid, toxic, flammable, flash point <23°C, Hazard Class: 6.1; Labels: 6.1-Poisonous material, 3-Flammable liquid.

Degradation

Oxamyl (1) was stable under acidic conditions but hydrolysed rapidly under basic conditions at 25 °C with DT50 values of >30 days at pH 5, 8 days at pH 7, and 3 hours at pH 9 (McNally and Wheeler, 1988). Cleavage of the methylcarbamoyl bond yielded methyl 2-( dimethylamino)- N-hydroxy-2-oxoethanimidothioate (2) as the primary hydrolysis product.
Exposure to artificial sunlight enhanced the degradation of oxamyl in pH 5 solution (DT50 7 vs. >30 days) to yield compound 2 (McNally, 1988). Rapid degradation of oxamyl was also observed in natural water exposed to natural sunlight (DT50 <1 day, Harvey and Han, 1978a). Compound 2 and its geometrical isomer (3) were major products observed in natural and distilled water exposed to artificial and natural sunlight. Further hydrolysis yielded (dimethy1amino)oxoacetica cid (4) as a minor photodegradation product in natural water exposed to natural sunlight.

Incompatibilities

Compounds of the carboxyl group react with all bases, both inorganic and organic (i.e., amines) releasing substantial heat, water and a salt that may be harmful. Incompatible with arsenic compounds (releases hydrogen cyanide gas), diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides (releasing heat, toxic, and possibly flammable gases), thiosulfates and dithionites (releasing hydrogen sulfate and oxides of sulfur).

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal 2264 Oxamyl practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Small quantities may be treated with alkali and buried in a landfill. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Oxamyl Preparation Products And Raw materials

Raw materials

Preparation Products

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Oxamyl Suppliers

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