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

A17404 Tetrachlorophthalic anhydride, 98%

Codice CAS
117-08-8
Sinonimi

Dimensioni Prezzo ($) Quantità Disponibilità
500g 36,00
2500g 128,00
10000g 428,00
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Tetrachlorophthalic anhydride, 98%

MDL
MFCD00005920
EINECS
204-171-4

Proprietà chimiche

Formula
C8Cl4O3
Peso formula
285.90
Punto di fusione
254-258°
Punto di ebollizione
349-354°
Punto di infiammabilità
362°(683°F)
Sensibilità
Moisture Sensitive
Solubilità
Hydrolyzes slowly in water.

Applicazioni

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.

Note

Hygroscopic. Store away from oxidizing agents, acids.

Letteratura

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).

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H334-H317-H318-H400-H410

May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. Causes serious eye damage. Very toxic to aquatic life. Very toxic to aquatic life with long lasting effects.

Dichiarazioni precauzionali: P285-P261-P273-P280-P305+P351+P338-P310-P342+P311-P363-P304+P341-P501a

In case of inadequate ventilation wear respiratory protection. Avoid breathing dust/fume/gas/mist/vapours/spray. Avoid release to the environment. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. IF INHALED: If breathing is difficult, remove to fresh air and keep at rest in a position comfortable for breathing. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Beilstein
211560
Classe di rischio
9
Gruppo di imballaggio
III
Codice tariffe armonizzato
2917.39
TSCA
Yes
RTECS
TI3450000

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