ChemicalBook > CAS DataBase List > Benzothiazole, 2,5-dichloro- (7CI,8CI,9CI)

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

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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

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Safety

HS Code: 29342000

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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.

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N-Bromosuccinimide Price

TRC

Product number: D438498
Product name: 2,5-Dichlorobenzothiazole
Packaging: 500mg
Price: $200
Updated: 2021/12/16

SynQuest Laboratories

Product number: 7H70-5-1E
Product name: 2,5-Dichloro-1,3-benzothiazole
Purity: 97%
Packaging: 1g
Price: $82
Updated: 2021/12/16

Matrix Scientific

Product number: 073453
Product name: 2,5-Dichlorobenzothiazole
Purity: 95+%
Packaging: 1g
Price: $184
Updated: 2021/12/16

SynQuest Laboratories

Product number: 7H70-5-1E
Product name: 2,5-Dichloro-1,3-benzothiazole
Purity: 97%
Packaging: 5G
Price: $194
Updated: 2021/12/16

Matrix Scientific

Product number: 073453
Product name: 2,5-Dichlorobenzothiazole
Purity: 95+%
Packaging: 5g
Price: $573
Updated: 2021/12/16

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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

Honest Joy Holdings Limited

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

Zhuozhou Wenxi import and Export Co., Ltd

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

Zhuozhou Wenxi import and Export Co., Ltd

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

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