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95-16-9 - Benzothiazole, 97% - A10380 - Alfa Aesar

A10380 Benzothiazole, 97%

Número CAS
95-16-9
Nombre Alternativo

Tamaño Precio ($) Cantidad Disponibilidad
50g 21,70
250g 41,30
1000g 135,00
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Benzothiazole, 97%

MDL
MFCD00005775
EINECS
202-396-2

Propiedades químicas

Fórmula
C7H5NS
Peso molecular
135.19
Punto de fusión
Punto de ebullición
230°
Punto de inflamabilidad
107°(224°F)
Densidad
1.241
Índice de refracción
1.6420
Solubilidad
Slightly soluble in water. Soluble in alcohol, carbon disulfide

Aplicaciones

It is an interesting carbonyl equivalent and reacts with aldehydes or ketones to generate α-hydroxy carbonyl compounds. Benzothiazole is used as a chemical intermediate in organic synthesis. It is a precursor of rubber accelerators and a component of cyanine dyes. It is also used as a flavoring substance. It is also used as a flavor, antimicrobial agent, and component of cyanine dyes. Its derivatives are used as rubber accelerators.

Notas

Store away from oxidizing agents. Keep the container tightly closed and place it in a cool, dry and well ventilated condition.

Referencias documentales

Nawrocki ST, et al. Comparative aquatic toxicity evaluation of 2-(thiocyanomethylthio)benzothiazole and selected degradation products using Ceriodaphnia dubia. Arch. Environ. Contam. Toxicol.,2005,48(3), 344-350.

Asimakopoulos AG, et al. Occurrence and removal efficiencies of benzotriazoles and benzothiazoles in a wastewater treatment plant in Greece. The Science of the total environment.,2013,452-453163-171.

n-BuLi gives the 2-lithio-derivative, stable below -50o, which behaves as a formyl anion equivalent, reacting with aldehydes and ketones. The derived alcohols have been transformed into various useful products, e.g. ɑ-hydroxy ketones: Tetrahedron Lett., 5, 9, 13, (1978); Bull. Chem. Soc. Jpn., 61, 3637 (1988):

The lithio-derivative can also be acylated with esters, lactones, amides or nitriles. In these applications, benzothiazole is claimed to be superior to the better known 1,3-dithiane as a formyl anion synthon.

See also 2-(Trimethyl­silyl)­benzothiazole, L11625, and 2-(Trimethyl­silyl)­thiazole, B21903.

Reaction of the lithio-derivative at low temperatures with PCl3 gives, as the major product, 2,2'-bibenzothiazole instead of the expected tertiary phosphine: Heterocycles, 30, 347 (1990). POCl3 or SOCl2 also promote the symmetrical coupling reaction: Heteroatom. Chem., 5, 409 (1994).

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H301-H311-H332-H319

Toxic if swallowed. Toxic in contact with skin. Harmful if inhaled. Causes serious eye irritation.

Indicaciones de precaución: P261-P280-P301+P310a-P305+P351+P338-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Otras referencias

Merck
14,1107
Beilstein
109468
Clase de peligro
6.1
Grupo de embalaje
III
Código de tarifa arancelaria unificado
2934.20
TSCA
Yes
RTECS
DL0875000

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