3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide
Bentazone
CAS: 25057-89-0
Molecular Formula: C10H12N2O3S
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Names and Identifiers
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Physico-chemical Properties
| Molecular Formula | C10H12N2O3S |
| Molar Mass | 240.28 |
| Density | 1.3387 (rough estimate) |
| Melting Point | 137-139°C |
| Boling Point | 395.7±25.0 °C(Predicted) |
| Flash Point | 2°C |
| Water Solubility | 0.5g/L(20 ºC) |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 1.8E-06mmHg at 25°C |
| Appearance | Solid |
| Color | White |
| Merck | 13,1051 |
| BRN | 530220 |
| pKa | pKa (24°): 3.3 |
| Storage Condition | APPROX 4°C |
| Refractive Index | 1.5650 (estimate) |
| Physical and Chemical Properties | White crystals. Melting Point 137-139 °c. Slightly soluble in benzene, soluble in acetone, chloroform, ethanol. The solubility in water at 20 °c was 0.05%. |
| Use | Benserazide is a kind of systemic herbicide which was successfully developed by pasteen company of Germany in 1968. It is suitable for rice, Triticum aestivum, corn, sorghum, soybean, peanut, pea, alfalfa and other crops, and has excellent control effect on broad-leaved weeds and Cyperaceae weeds. Bentazon has the advantages of high efficiency, low toxicity, broad spectrum of killing grass, no Phytotoxicity, and good compatibility with other herbicides |
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R36 - Irritating to the eyes R43 - May cause sensitization by skin contact R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable |
| Safety Description | S2 - Keep out of the reach of children. S24 - Avoid contact with skin. S37 - Wear suitable gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S16 - Keep away from sources of ignition. |
| UN IDs | UN 1648 3/PG 2 |
| WGK Germany | 2 |
| RTECS | DK9900000 |
| HS Code | 29349990 |
| Toxicity | LD50 in male, female rats (mg/kg): 383.2, 433.6 orally (Ugazio) |
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Nature
Open Data Verified Data
pure white crystalline solid, melting point of 138 ° C, decomposition temperature of 200 ° C, vapor pressure (20 ° C)<1.33 × lO-s, relative density of 11 22. At 20 ° C, the solubility was (%): acetone 150.7, ethanol 86.4, ethyl acetate 65, ether 61.6, chloroform 18.0, benzene 3.3, cyclohexane 0.02, water 0. It is stable to acid, alkali and light.
Last Update：2024-01-02 23:10:35
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Preparation Method
Open Data Verified Data
first, isopropylamine was added to the cooled hydrochloric acid to prepare an aqueous solution of isopropylamine hydrochloride. The water was distilled off, and then the water was further removed at 150 ° C, dichlorothionyl was added to isopropylamine sulfonyl chloride, and the reaction was carried out by heating under reflux to obtain isopropylamine sulfonyl chloride. In addition, phthalic anhydride and ammonia, sodium hydroxide, O-formamide sodium benzoate was prepared, and then O-aminobenzoate methyl ester was prepared by O-formamide sodium benzoate and sodium hypochlorite, sodium hydroxide, methanol reaction. Finally, with toluene as solvent and ammonia as acid binding agent, the isopropylaminosulfonyl chloride prepared above was added to methyl anthranilate and heated to form methyl N-isopropylaminosulfonyl anthranilate, the cyclization reaction is then carried out in a solution of sodium methoxide, followed by acidification to obtain the melaxone.
Last Update：2022-01-01 10:13:09
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Introduction
This standard substance is mainly used for measuring instrument calibration, analytical method evaluation and quality control, as well as the content determination and residue detection of corresponding components in related fields such as food, hygiene, environment and agriculture. It can also be used for value traceability or as a standard liquid reserve solution. It is diluted step by step and configured into various standard solutions for work. 1. Sample Preparation This standard substance is made of pure bentazon with accurate purity and fixed value as raw material, chromatographic ethanol as solvent, and accurately configured by weight-volume method. Bendazone, English name: Bentazone,CAS number: 25057-89-0 2. traceability and setting method This standard substance takes the configuration value as the standard value, and uses high performance liquid chromatography-diode array detector (HPLC-DAD) This batch of standard substances and quality control control samples are compared to verify the preparation value. By using preparation methods, measurement methods and measuring instruments that meet the requirements of metrological characteristics, the traceability of the value of the standard substance is guaranteed. 3. characteristic value and uncertainty (see certificate) number name standard value (ug/mL) relative expansion uncertainty (%)(k = 2)BW10116 The uncertainty of the 1004 standard value of bentapine in ethanol is mainly composed of raw material purity, weighing, constant volume, uniformity, stability and other uncertainty components. 4. uniformity test and stability inspection According to the JJF1343-2012 [General Principles and Statistical Principles of Standard Substance Setting], random sampling of sub-packed samples is carried out, uniformity test of solution concentration is carried out, and stability inspection is carried out. The results show that the standard material has good uniformity and stability. The standard substance is valid for 18 months from the date of setting the value. The development unit will continue to monitor the stability of the standard substance. If the value changes are found during the validity period, the user will be notified in time. 5. packaging, transportation and storage, use and precautions 1. Packaging: This standard substance is packed in borosilicate glass ampoules, about 1.2 mL/branch. When removing or diluting, the pipette quantity shall prevail. 2. Transportation and storage: refrigerated transportation, during transportation, extrusion and collision should be avoided; storage under freezing and dark conditions. 3. Use: Balance at room temperature (20±3 ℃) before unsealing, and shake well. Once the ampoule is opened, it should be used immediately and cannot be used as a standard substance after being fused again.
Last Update：2022-10-16 17:15:17
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Use
Open Data Verified Data
systemic herbicide. Contact type, selective post-emergence herbicide. When used in dry fields, it can resist photosynthesis through leaf infiltration and conduction into chloroplasts. When used in paddy fields, it can also transmit to stems and leaves, hinder photosynthesis and water metabolism of weeds, and cause physiological dysfunction and death. Mainly used for the control of double-leaf weeds, paddy field Cyperus and other single-leaf weeds, is a good herbicide in rice field. Can also be used for wheat, soybean, cotton, peanut and other dry field crops weed, such as clover, water Cyperus, duck tongue grass, cow felt, flat cane grass, wild water chestnut, pig, grass and so on. The effect of high temperature is good, and the effect is poor.
Last Update：2022-01-01 10:13:10
3-isopropyl-1H-benzo-2,1,3-thiadiazin-4one 2,2-dioxide - Safety
Open Data Verified Data
The oral LD50 of rats was 10 mg/kg, the percutaneous LD50 of rats was> 2500mg/kg, and the intraperitoneal LD50 of mice was 400mg/kg. 90d feeding test rats had no effect dose of 1600mg/kg, dogs 3000mg/kg. Rats fed for 2 years had no effect dose of 350mg/kg. The LC50 of carp was 40mL( 96H), while the LC50 of industrial product was 190mg/L (96H). It has no irritation to rabbit skin and severe irritation to eyes. Non-toxic to bees. No teratogenic, carcinogenic, mutagenic effects.
Last Update：2022-01-01 10:13:10
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Product Name: Bentazone Visit Supplier Webpage Request for quotationCAS: 25057-89-0
Tel: 0714-3999186
Email: 2853786052@qq.com
Mobile: 86+15671228036
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Product Name: Bentazone Request for quotation
CAS: 25057-89-0
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Mobile: 0086 189 4982 3763
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CAS: 25057-89-0
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
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Product Name: Bentazone in ethanol Visit Supplier Webpage Request for quotationCAS: 25057-89-0
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Email: 3008007409@qq.com
Mobile: 18021002903
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