Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)
- Product Name
- Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)
- CAS No.
- 2941-48-2
- Chemical Name
- Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)
- Synonyms
- 2,5-Dichlor-benzothiazol;Benzothiazole, 2,5-dichloro-;2,5-dichloro-1,3-benzothiazole;Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)
- CBNumber
- CB81050329
- Molecular Formula
- C7H3Cl2NS
- Formula Weight
- 204.08
- MOL File
- 2941-48-2.mol
Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) Property
- Melting point:
- 64-66℃
- Boiling point:
- 287℃
- Density
- 1.567
- Flash point:
- 127℃
- storage temp.
- under inert gas (nitrogen or Argon) at 2-8°C
- pka
- -0.73±0.10(Predicted)
- Appearance
- Light yellow to light brown Solid
Safety
- HS Code
- 29342000
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- D438498
- Product name
- 2,5-Dichlorobenzothiazole
- Packaging
- 500mg
- Price
- $200
- Updated
- 2021/12/16
- Product number
- 7H70-5-1E
- Product name
- 2,5-Dichloro-1,3-benzothiazole
- Purity
- 97%
- Packaging
- 1g
- Price
- $82
- Updated
- 2021/12/16
- Product number
- 073453
- Product name
- 2,5-Dichlorobenzothiazole
- Purity
- 95+%
- Packaging
- 1g
- Price
- $184
- Updated
- 2021/12/16
- Product number
- 7H70-5-1E
- Product name
- 2,5-Dichloro-1,3-benzothiazole
- Purity
- 97%
- Packaging
- 5G
- Price
- $194
- Updated
- 2021/12/16
- Product number
- 073453
- Product name
- 2,5-Dichlorobenzothiazole
- Purity
- 95+%
- Packaging
- 5g
- Price
- $573
- Updated
- 2021/12/16
Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) Chemical Properties,Usage,Production
Chemical Properties
Pale yellow solid
Synthesis
5331-91-9
2941-48-2
General procedure for the synthesis of 2,5-dichlorobenzothiazole from 2-mercapto-5-chlorobenzothiazole: 5-chlorobenzothiazole-2-thiol (2 g, 9.9 mmol, purchased from Aldrich) was slowly added to thionyl chloride (20 mL, purchased from Aldrich) and stirred for 1 hour at room temperature. The reaction mixture was then heated to 50 °C and maintained for 15 minutes. Upon completion of the reaction, the mixture was cooled to room temperature, slowly poured into ice water and stirring was continued for 30 minutes. The reaction product precipitated out of the solution as a yellow solid and was collected by vacuum filtration, dried under a stream of air followed by high vacuum drying to afford 1.92 g of the target compound 2,5-dichlorobenzothiazole in 96% yield. The structure of the product was confirmed by 1H NMR (400 MHz, DMSO-d6): δ 8.18 (d, J = 8.7 Hz, 1H), 8.1 (d, J = 2.0 Hz, 1H), 7.59 (dd, J = 8.7,2.1 Hz, 1H).
References
[1] Patent: US2005/250820, 2005, A1. Location in patent: Page/Page column 71
[2] Synthesis (Germany), 2018, vol. 50, # 10, p. 2027 - 2032
[3] Patent: WO2014/176258, 2014, A1. Location in patent: Page/Page column 29
[4] Patent: WO2007/146066, 2007, A2. Location in patent: Page/Page column 88
[5] Patent: WO2009/55357, 2009, A1. Location in patent: Page/Page column 35
Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) manufacturers
- Product
- 2,5-Dichlor-benzothiazol 2941-48-2
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 98.8%
- Supply Ability
- 100 tons
- Release date
- 2022-01-14
- Product
- Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) 2941-48-2
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-07-11
- Product
- Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI) 2941-48-2
- Price
- US $15.00-10.00/KG
- Min. Order
- 1KG
- Purity
- 99%+ HPLC
- Supply Ability
- Monthly supply of 1 ton
- Release date
- 2021-07-09