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Arsenal 250A

Imazapyr acid

CAS: 81334-34-1

Molecular Formula: C13H15N3O3

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Arsenal 250A - Names and Identifiers

Name Imazapyr acid
Synonyms Charper
Imazapyr
AC-243997
AC 252925
CL 252925
Arsenal 250A
Imazapyr acid
midazol-2-yl)-
Imazapyr Standard
Nicotinicacid,2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)
2-(4-Isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid
2-(4-ISOPROPYL-4-METHYL-5-OXO-2-IMIDAZOLIN-2-YL)-NICOTINIC ACID
2-(5-Oxo-4-methyl-4-isopropyl-1H-imidazole-2-yl)pyridine-3-carboxylic acid
2-(4-ISOPROPYL-4-METHYL-5-OXO-4,5-DIHYDRO-1H-IMIDAZOL-2-YL)-NICOTINIC ACID
2-(4-Methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl)pyridine-3-carboxylic acid
2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1h-imidazol-2-yl)-3-pyridine
3-pyridinecarboxylicacid,2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1h-i
2-(4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1h-imidazol-2-yl)-3-pyridinecarboxylicaci
2-[4-methyl-5-oxo-4-(propan-2-yl)-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid
2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-Pyridinecarboxylicacid
5-ethyl-2-[4-methyl-5-oxo-4-(propan-2-yl)-4,5-dihydro-1H-imidazol-2-yl]pyridine-3-carboxylic acid
CAS 81334-34-1
EINECS 200-158-5
InChI InChI=1/C15H19N3O3/c1-5-9-6-10(13(19)20)11(16-7-9)12-17-14(21)15(4,18-12)8(2)3/h6-8H,5H2,1-4H3,(H,19,20)(H,17,18,21)

Arsenal 250A - Physico-chemical Properties

Molecular FormulaC13H15N3O3
Molar Mass261.28
Density1.1923 (rough estimate)
Melting Point169-173°C
Boling Point404.53°C (rough estimate)
Flash Point224°C
Vapor Presure0-0Pa at 20-25℃
Appearancegrayish white crystal
BRN5442754
pKa1.9, 3.6(at 25℃)
Storage Condition0-6°C
StabilityStable. Incompatible with strong oxidizing agents.
SensitiveIt is corrosive and cannot be mixed and stored in unlined containers. It reacts with acid, alkali an
Refractive Index1.5600 (estimate)
MDLMFCD00144470
Physical and Chemical PropertiesThe appearance was a white solid. m. P. 169-173 °c. 45 C can be stable for 3 months, room temperature can be stable for 2 years. In the pH value of 5~9, dark, stable in water medium. The half-life of hydrolysis was 6d (pH 5~9) in sunlight, and the Half-Life was 3~4 months in soil. It is corrosive and cannot be mixed and stored in an un-lined container. Reaction with acid, alkali and strong oxidant.
isopropylamine salt is a white solid. 128 to 130 °c, vapor pressure 0.013 x 10-3Pa (60 °c). 15 ° C solubility: dimethylformamide 473g/L, dimethyl sulfoxide 665G/L, methanol 230g/L, ethanol 72g/L, dichloromethane 72g/L, acetone 6g/L, toluene 3G/L, water 9.74g/L, water (25 °c) 11.3g/L.
UseIt is a new type of broad-spectrum herbicide, which has excellent herbicidal activity on the weeds of Cyperaceae, annual and perennial monocotyledonous weeds and broad-leaved weeds. Its mechanism of action is to inhibit the synthesis of branched chain amino acids. This product is a selective herbicide, used in railway, highway, factory, warehouse, canal and forestry herbicidal, dosage 500 ~ 2000g/hm2, can control most annual and perennial herbs and plants, soil treatment and post-emergence stem and leaf treatment can be carried out, and post-treatment of seedlings is more effective. In the treatment of stems and leaves, 0.25% Non-ionic surfactant should be added to the solution. After 2 to 4 weeks, the herbs lose their green and their tissues become bad, the young leaves of the tree turned red or brown within 1 month, and some tree species were all fallen within 3 months, and eventually died.

Arsenal 250A - Risk and Safety

Hazard SymbolsXi - Irritant
Irritant
Risk CodesR36 - Irritating to the eyes
R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
Safety DescriptionS26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. 
WGK Germany2
RTECSUS5682500
HS Code29333990
ToxicityLD50 orally in rats: >5000 mg/kg; dermally in rabbits: >2000 mg/kg (Paxman)

Arsenal 250A - Reference Information

, it is a kind of herbicide, and its isopropylamine salt can be used before or after Bud, and can be quickly absorbed by plant roots and leaves, inhibit the biosynthesis of plant side chain amino acids, and prevent the growth of weeds, contributed to his death. The control targets include all weeds, and have good herbicidal activity against Cyperaceae weeds, annual and perennial monocotyledonous weeds, broadleaved weeds and miscellaneous trees. Applicable to non-cultivated land and rubber plantation, oil palm, forest and tea garden.
【usage method】 it can be used before and after the bud, and the non-cultivated land herbicide dosage is 0.25~2.5 (ai)/hm2, and the rubber garden and oil palm garden use 0.125~1.0 (ai)./hm2, forest with 0.25~1.25 (ai)/hm2, tea garden with 0.1~2.0 (ai)/hm2, in addition to smear or injection of tobacco can prevent the germination of deciduous tree stump.
[note] in the soil, the residual period is long, up to 8 years.
[storage conditions] weed smoke can be stable for 3 months at 45 ℃, stable for two years at room temperature, at pH 5~9, in the dark, it is stable in aqueous medium and cannot be higher than 45 °c during storage. This product solution in simulated sunlight acid is decomposed, hydrolysis DT506 days (pH5 ~ 9), DT5090 ~ 120 days in soil. It cannot be mixed or stored in an unlined container because of its corrosiveness. With alkali or acid and strong oxidant can react.
LogP-3.97-0.04 at 20℃ and pH3-9.9
dissociation constant 1.7-11.1 at 20 ℃
EPA chemical substance information information provided by: ofmpeb.epa.gov (external link)
organic heterocyclic herbicide
toxicity Acute oral LD50>5000mg/kg, acute oral LD50>2000mg/kg in mice and acute percutaneous LD50>2000mg/kg in rabbits. It has moderate irritation to rabbit skin and irritation to eyes, but it can recover. Rainbow trout, blue gill fish LC50>100mg/L(96H), Daphnia LC50>100mg/L (48h). Quail and wild duck acute oral LD50>2150mg/kg,LC50>5000mg/kg feed (8d). Bee exposure LD50>0.1mg/only. This product isopropylamine salt of rat acute oral LD50>10000mg/kg, mice acute oral LD50>10000mg/kg, mice acute percutaneous LD50>2000mg/kg.
Use Imidazolinone herbicides. Its mechanism of action is to inhibit the synthesis of branched chain amino acids. This product is a selective herbicide, used in railway, highway, factory, warehouse, canal and forestry herbicidal, dosage 500 ~ 2000g/hm2, can control most annual and perennial herbs and plants, soil treatment and post-emergence stem and leaf treatment can be carried out, and post-treatment of seedlings is more effective. In the treatment of stems and leaves, 0.25% Non-ionic surfactant should be added to the solution. After 2 to 4 weeks, the herbs lose their green and their tissues become bad, the young leaves of the tree turned red or brown within 1 month, and some tree species were all fallen within 3 months, and eventually died.
It is a new broad-spectrum herbicide, which has excellent herbicidal activity on the weeds of Cyperaceae, annual and perennial monocotyledonous weeds and broadleaf weeds. Its mechanism of action is to inhibit the synthesis of branched chain amino acids. This product is a selective herbicide, used in railway, highway, factory, warehouse, canal and forestry herbicidal, dosage 500 ~ 2000g/hm2, can control most annual and perennial herbs and plants, soil treatment and post-emergence stem and leaf treatment can be carried out, and post-treatment of seedlings is more effective. In the treatment of stems and leaves, 0.25% Non-ionic surfactant should be added to the solution. After 2 to 4 weeks, the herbs lose their green and their tissues become bad, The young leaves of the tree turned red or brown within 1 month, and some tree species all fell within 3 months, and eventually died.;
production method preparation method diethyl butanone diacid was synthesized by adding 48.0 ml of diethyl ether and g of sodium ethoxide. Cool to 4-6 °c. A mixture of 68.8G of diethyl oxalate and 49.7G of ethyl acetate was added dropwise. Stir for 0.5h. The temperature was increased to 38-40 °c. Reflux for 1H. Left overnight. Adjust the pH value to 1~2 with 10% dilute sulfuric acid. The ether layer was separated. Wash with water. The ether layer was distilled off, and the residue was distilled under reduced pressure to collect 130g of a 132 ° C. To 39.3 ° C./3200Pa fraction. Synthesis of diethyl 2-aminosuccinate 89.5G of diethyl butanedioate and 150g of toluene were added. The mixture was heated and stirred to 100-110 °c. Ammonia gas was then introduced for 8H. Cooling. The reaction solution was washed with water. Toluene was removed under reduced pressure. By distillation under reduced pressure, 110g of a 114-70.15 °c/666.7Pa fraction was collected. Synthesis of diethyl 5-ethylpyridine-2, 3-carboxylate 2-ethylacrolein (30.58g), diethyl 2-aminosuccinate (59.18g), p-toluenesulfonic acid (2.7g) and g of DMF were added. The reaction was carried out for 5h at 90 °c. DMF was distilled off under reduced pressure. 500g of toluene was added to the residue. Wash with 5% sodium hydroxide. The toluene was distilled off under reduced pressure. The residue was distilled under reduced pressure. The 148-150 °c/266.6Pa fraction, 70.5g, was collected. Synthesis of 5-ethylpyridine-2, 3-carboxylic acid anhydride 25% g of sodium hydroxide solution was added. The mixture was heated to 55 °c with stirring. 56.2g of diethyl 5-ethylpyridine-2, 3-carboxylate was added dropwise. The addition time was about 20min. It was heated to 65 °c for 15min. Ethanol-water was distilled off under reduced pressure. 70g of water and 318g of tetrahydrofuran were then added. The temperature was maintained at 40 °c. The reaction solution was adjusted to pH 50% with 1.65 sulfuric acid. The aqueous phase was separated. The oil phase was distilled off tetrahydrofuran. Acetic anhydride 50.4g and 4-picoline 19.1g were added. Stir at room temperature for 1H. Low boiling was distilled off under reduced pressure. 36.0G (content 81.52%) of 5-ethylpyridine-2, 3-carboxylic anhydride was obtained. Imidazole nicotinic acid synthesis 7.31G of 5-ethylpyridine-2, 3-carboxylic anhydride and 5.2g of 2-amino -2, 3-dimethylbutanamide were added along with 100ml of toluene. Stir overnight at room temperature. 2.02g of triethylamine (0.02mol) was added. Reflux dehydration. The toluene was removed under reduced pressure. The residue was added to 100ml of an aqueous solution. The pH was adjusted to 9 with 10% sodium hydroxide. The oil phase was separated. The aqueous phase was adjusted to PH 3 with hydrochloric acid. The precipitated solid was recrystallized from a mixed solvent. The product was obtained as a colorless solid (7.3g). m. P. 168-170 °c. Preparation Method: dipyridinedicarboxylic acid loses water to generate pyridine dianhydride, then reacts with (CH3)2CHCCH3(CN)NH2 to generate carbamoyl nicotinic acid, and then hydrolyzes with hydrogen peroxide in an aqueous solution of sodium hydroxide to warm and cyclize, synthesis of imidazole nicotinic acid.
toxic substance data information provided by: pubchem.ncbi.nlm.nih.gov (external link)
Last Update：2024-04-10 22:41:03
Arsenal 250A
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Shanghai Macklin Biochemical Co., Ltd
Featured ProductsSpot supply
Product Name: Imazapyr Visit Supplier Webpage Request for quotation
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Tel: +86-18821248368
Email: Int06@meryer.com
Mobile: +86-18821248368
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Email: jy6101@rmastandards.com
Mobile: 86-15787876101
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Email: 3623107365@qq.com
Mobile: 18916960931
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SHANGHAI ACMEC BIOCHEMICAL TECHNOLOGY CO., LTD.
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Product Name: Imazapyr Visit Supplier Webpage Request for quotation
CAS: 81334-34-1
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
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Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185 Click to send a QQ messageSend QQ message
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Hefei TNJ Chemical Industry Co.,Ltd.
Product Name: Imazapyr acid Request for quotation
CAS: 81334-34-1
Tel: 0086-551-65418684
Email: sales@tnjchem.com
　　　　 info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840 Click to send a QQ message
Wechat: 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Shanghai Yuanye Bio-Technology Co., Ltd.
Multiple SpecificationsSpot supply
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CAS: 81334-34-1
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
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