Tetrachlorophthalic anhydride, 98%

Description

CAS: 117-08-8 | C8Cl4O3 | 285.885 g/mol

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.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
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.

Solubility
Hydrolyzes slowly in water.

Notes
Hygroscopic. Store away from oxidizing agents, acids.

Specifications

Chemical Identifiers

• CAS: 117-08-8
• Molecular Formula: C8Cl4O3
• Molecular Weight (g/mol): 285.885
• MDL Number: MFCD00005920
• InChI Key: AUHHYELHRWCWEZ-UHFFFAOYSA-N
• Synonym: tetrachlorophthalic anhydride, tetrathal, 4,5,6,7-tetrachloro-1,3-isobenzofurandione, niagathal, 1,3-isobenzofurandione, 4,5,6,7-tetrachloro, phthalic anhydride, tetrachloro, 4,5,6,7-tetrachloroisobenzofuran-1,3-dione, 1,3-dioxy-4,5,6,7-tetrachloroisobenzofuran, unii-76glw0lbek, ccris 6202
• PubChem CID: 8326
• ChEBI: CHEBI:59097
• IUPAC Name: 4,5,6,7-tetrachloro-2-benzofuran-1,3-dione
• SMILES: C12=C(C(=C(C(=C1Cl)Cl)Cl)Cl)C(=O)OC2=O

• Melting Point: 254°C to 258°C
• Boiling Point: 349°C to 354°C
• Flash Point: 362°C (683°F)
• Odor: Weak
• Quantity: 500 g
• UN Number: UN3077
• Beilstein: 211560
• Sensitivity: Moisture sensitive
• Solubility Information: Hydrolyzes slowly in water.
• Formula Weight: 285.9
• Percent Purity: 98%
• Chemical Name or Material: Tetrachlorophthalic anhydride

Safety and Handling

Hazard Category	H317-H318-H334-H350
Hazard Statement	GHS H Statement H334-H318-H317 May cause allergy or asthma symptoms or breathing difficulties if inhaled. Causes serious eye damage. May cause an allergic skin reaction.
Precautionary Statement	P201-P202-P261-P272-P280g-P281-P285-P302+P352-P304+P341-P305+P351+P338-P308+P313-P310-P333+P313-P342+P311-P363-P501c
DOTInformation	Transport Hazard Class: 9; Packing Group: III; Proper Shipping Name: ENVIRONMENTALLY HAZARDOUS SUBSTANCES, SOLID, N.O.S.
EINECSNumber	204-171-4
RTECSNumber	TI3450000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only