2,4-DINITROBENZENESULFENYL CHLORIDE
- CAS No.
- 528-76-7
- Chemical Name:
- 2,4-DINITROBENZENESULFENYL CHLORIDE
- Synonyms
- KHARASCH REAGENT;DNP-SULFENYL CHLORIDE;LABOTEST-BB LT00453936;2,4-Dinitrophenylthio chloride;(2,4-Dinitrophenylthio) chloride;2,4-dinitro-benzenesulfenylchlorid;2,4-DINITROPHENYLSULFENYL CHLORIDE;2,4-DINITROBENZENESULFENYL CHLORIDE;2,4-dinitrophenyl hypochlorothioite;2,4-Dinitrobenzenesulphenyl chloride
- CBNumber:
- CB8349604
- Molecular Formula:
- C6H3ClN2O4S
- Molecular Weight:
- 234.62
- MOL File:
- 528-76-7.mol
- Modify Date:
- 2023/6/8 17:06:36
| Melting point | 94-97 °C(lit.) |
|---|---|
| Boiling point | 430.1±35.0 °C(Predicted) |
| Density | 1.700 (estimate) |
| refractive index | 1.6000 (estimate) |
| storage temp. | 2-8°C |
| solubility | benzene: soluble |
| form | solid |
| color | Light orange to Yellow to Green |
| Merck | 14,3274 |
| BRN | 405600 |
| CAS DataBase Reference | 528-76-7(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfenyl chloride, 2,4-dinitro- (528-76-7) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS02,GHS05,GHS07 |
|---|---|
| Signal word | Danger |
| Hazard statements | H314-H228-H302+H312+H332 |
| Precautionary statements | P280-P305+P351+P338-P310-P210-P240-P241-P260-P264-P270-P271-P301+P330+P331+P310-P303+P361+P353+P310+P363-P304+P340+P310-P305+P351+P338+P310-P370+P378-P405-P501 |
| Hazard Codes | C |
| Risk Statements | 34-37 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 3261 8/PG 2 |
| WGK Germany | 3 |
| F | 8-9-19-21 |
| HS Code | 2930.90.2900 |
| HazardClass | 8 |
| PackingGroup | III |
2,4-DINITROBENZENESULFENYL CHLORIDE Chemical Properties,Uses,Production
Uses
2,4-Dinitrobenzenesulfenyl chloride was used in preparation of chlorine and bromine biphenyls.
Preparation
CAUTION: This reaction should be carried out in a hood behind a safety shield. The product decomposes explosively if heated above 90-100°C .
To a 500-ml, three-necked flask equipped with a mechanical stirrer, distillation column, and distillation head is added 100 gm (0.25 mole) of dry 2,4-dinitrophenyl disulfide and 250 ml of ethylene chloride. The contents are heated with an oil bath at 125°C until 30-40 ml of the solvent is collected by distillation. The contents are cooled and the distillation head replaced by a gas inlet and exit tube connected to an alkali trap. Then 0.15 gm (0.002 mole) of Merck "Iron by Hydrogen" powder is added as a catalyst [51a-c], and dry chlorine gas is slowly bubbled into the reaction. In a few minutes, the reaction warms up, and the flask is surrounded with a 20°C water bath. The chlorine gas is bubbled in at such a rate that 18 gm (0.25 mole) is added over a 1-1½-hr period. After this time, the suspended disulfide should gradually disappear, and a clear, amber-red solution results. The flow of chlorine gas is stopped, the solution stirred for 1 hr, filtered through diatomaceous earth, the filtrate aspirated to remove excess chlorine, and then 400 ml of anhydrous ether is added. Within ½ hr, most of the product crystallizes by cooling the flask in an ice-salt-water bath for 3-4 hr. The product is filtered, washed with 100 ml of cold ether, and then dried to afford 70 gm (60%) of brilliant yellow needles, m.p. 95-95.5°C.
General Description
2,4-Dinitrobenzenesulfenyl chloride undergoes addition reactions with transannularly substituted cycloalkenes and norbornenes. 2,4-Dinitrobenzenesulfenyl chloride can convert allylic alcohols to dienes by 1,4-elimination.
Purification Methods
Crystallise the sulfenyl chloride from CCl4. [Beilstein 6 II 316.]
2,4-DINITROBENZENESULFENYL CHLORIDE Preparation Products And Raw materials
Raw materials
Preparation Products
2,4-DINITROBENZENESULFENYL CHLORIDE Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| TCI Chemicals (India) Pvt. Ltd. | 1800 425 7889 | New Delhi, India | 6778 | 58 | Inquiry |
| career henan chemical co | +86-0371-86658258 +8613203830695 | China | 29826 | 58 | Inquiry |
| Shaanxi Dideu Medichem Co. Ltd | +86-29-87569265 +86-18612256290 | China | 2132 | 58 | Inquiry |
| Dayang Chem (Hangzhou) Co.,Ltd. | 571-88938639 +8617705817739 | China | 52861 | 58 | Inquiry |
| GIHI CHEMICALS CO.,LIMITED | +8618058761490 | China | 49999 | 58 | Inquiry |
| Aladdin Scientific | +1-+1(833)-552-7181 | United States | 57511 | 58 | Inquiry |
| ABCR GmbH & CO. KG | 49 721 95061 0 | Germany | 6846 | 75 | Inquiry |
| MP Biomedicals, LLC. (Division of Valiant FC Co., Ltd.) | 1-440-3371200 Extn. 7210 | United States | 1854 | 58 | Inquiry |
| CHEMOS GmbH & Co. KG | 49-871-9663460 | Germany | 6728 | 58 | Inquiry |
| TCI America, Inc. (Tokyo Chemical Industry Co., Ltd.) | 1-503-2831681 | United States | 3164 | 58 | Inquiry |