Tetrachlorophthalic anhydride, commonly referred to as TCPA, is a highly chlorinated cyclic anhydride used as a core reactive intermediate in specialized chemical production. It is fundamentally employed in polymer flame retardant synthesis to provide high-performance thermal stability and fire resistance to polyester resins and polyurethanes. This chemical also serves as a critical precursor for the manufacturing of phthalein-based dyes and high-end pigments. We provide competitive factory pricing and ensure customized specifications to meet diverse technical requirements. Each batch is supported by full documentation including MSDS, TDS, COA, and is available for bulk supply to global industrial partners.
Tetrachlorophthalic Anhydride CAS 117-08-8
- CAS: 117-08-8
- Synonyms: TCPA, 1,3-Isobenzofurandione 4,5,6,7-tetrachloro-, Tetrachlorophthalic acid anhydride, Perchlorophthalic anhydride
- Einecs: 204-171-4
- Molecular Formula: C8Cl4O3
- Grade: Industrial grade 98%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Tetrachlorophthalic anhydride
Appearance: White Crystal or Powder
CAS Number: 117-08-8
EINECS number: 204-171-4
Formula: C8Cl4O3
Molecular weight: 285.88
Indicator information:
Metric Name Metric
Characteristics White crystalline or colorless prismal needles
Soluble in dioxane, insoluble in ether, insoluble in cold water, decomposed into tetrachlorophenylic acid in hot water.
Content≥99%
Melting point 254-256°C
Boiling point 371°C
Flash point 362°C
Vapor pressure 0.16 mmHg (145 °C)
Solubility 0.8 mg/L (21 ºC)
Dry weight loss ≤0.5%
Free chlorine ≤ 10ppm
Iron ≤ 10ppm
Alkali insoluble ≤0.5%
HCB ≤0.1%
Usage: Used as phthalocyanine green pigment and tonnage dye intermediate, and also as a raw material for alkyd resin
FAQ - Technical & Supply Chain
-
Q:
Does TCPA correspond to the same substance as Tetrachlorophthalic Anhydride?
A: Yes. TCPA is the industry-standard acronym for Tetrachlorophthalic Anhydride, and both refer to the chemical identity registered under CAS 117-08-8. -
Q:
Is this product intended for laboratory research or industrial-scale formulation?
A: This substance is supplied as an industrial intermediate intended for large-scale manufacturing and formulation processes. It is produced for industrial applications rather than for small-scale laboratory reagent use.
Documents
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Quotation
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Storage & Handling
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Supply Support
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
