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117-08-8 - Tetrachlorophthalic anhydride, 98% - A17404 - Alfa Aesar

A17404 Tetrachlorophthalic anhydride, 98%

Número CAS
117-08-8
Nombre Alternativo

Tamaño Precio ($) Cantidad Disponibilidad
500g 36,00
2500g 128,00
10000g 428,00
Añadir al carrito Añadir al presupuesto al por mayor Ver artículo

Tetrachlorophthalic anhydride, 98%

MDL
MFCD00005920
EINECS
204-171-4

Propiedades químicas

Fórmula
C8Cl4O3
Peso molecular
285.90
Punto de fusión
254-258°
Punto de ebullición
349-354°
Punto de inflamabilidad
362°(683°F)
Sensibilidad
Moisture Sensitive
Solubilidad
Hydrolyzes slowly in water.

Aplicaciones

Protection of amines as their tetrachlorophthalimide derivatives, by reaction with the anhydride in the presence of triethylamine, has been found to be useful in oligosaccharide chemistry. The group is stable to a wide range of reagents but can be selectively cleaved with ethylenediamine at lower temperatures than for the parent phthalimide derivatives; in particular, carboxylic esters are not cleaved under these conditions.

Notas

Hygroscopic. Store away from oxidizing agents, acids.

Referencias documentales

Wilfred Howe, A.F.O.M., M.R.C.G.P.; Katherine M. Venables, M.Sc., M.R.C.P.; Michael D. Topping, Ph.D.; Michael B. Dally, M.R.A.C.P.; Rosemarie Hawkins, S.R.N.; J.Stephen Law, M.D.; Anthony J.Newman Taylor, M.Sc., M.R.C.P. Tetrachlorophthalic anhydride asthma: evidence for specific IgE antibody Journal of Allergy and Clinical Immunology. 1983, 71 (1), 5-11.

Gary M. Liss, MD, MS, FRCPC.; David Bernstein, MD.; Leon Genesove, MD, FRCPC.; Jaan O. Roos, MD, FRCPC.; Janet Lim, MD. Assessment of risk factors for IgE-mediated sensitization to tetrachlorophthalic anhydride. Journal of Allergy and Clinical Immunology. 1993, 92 ( 237-247),.

Protection of amines as their tetrachlorophthalimide derivatives, by reaction with the anhydride in the presence of triethylamine, has been found to be useful in oligosaccharide chemistry. The group is stable to a wide range of reagents but can be selectively cleaved with ethylenediamine at lower temperatures than for the parent phthalimide derivatives; in particular, carboxylic esters are not cleaved under these conditions: J. Am. Chem. Soc., 117, 3302 (1995); J. Org. Chem., 61, 432 (1996).

Indicaciones de peligro y de precaución del GHS

Indicaciones de peligro (UE): H318-H334-H317

Causes serious eye damage. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction.

Indicaciones de precaución: P284-P261-P280a-P305+P351+P338-P310a-P501a

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

Otras referencias

Beilstein
211560
Clase de peligro
9
Grupo de embalaje
III
Código de tarifa arancelaria unificado
2917.39
TSCA
Yes
RTECS
TI3450000

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