Terephthaloyl chloride (CAS 100-20-9)

Chinese name: 对苯二甲酰氯

Terephthaloyl chloride is registered under CAS 100-20-9. Molecular formula: C8H4Cl2O2. Approximate molecular weight: 203.022. SKYSEVEN Chemical provides industrial chemical sourcing support and free CAS tools for global B2B buyers.

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Physical & identity data

CAS Number	100-20-9
English name	Terephthaloyl chloride
Chinese name	对苯二甲酰氯
Molecular formula	C8H4Cl2O2
Molecular weight	203.022
Melting point	79-83℃
Boiling point	265℃
Density	1.427g/cm3
Flash point	180℃
Refractive index	1.571
Water solubility	起反应
Vapor pressure	0.02mmHg(25°C)
HS code (ref.)	2917399090

Applications (reference)

是合成特种纤维的单体，可作芳纶、锦纶增强剂，也可作有机合成原料;对苯二甲酰氯和间苯二甲酰氯有许多相似的用途，也是聚酰胺、聚酯等聚合物的原料。全芳香族聚酰胺纤维作为一种耐热性阻燃纤维..

Related products at SKYSEVEN Chemical

No on-catalog product linked yet. Contact sales with CAS 100-20-9 for availability.

Authority references

• PubChem
• NIST Chemistry WebBook
• CAS Common Chemistry

FAQ

What is CAS 100-20-9?

Terephthaloyl chloride is identified by CAS Registry Number 100-20-9. Molecular formula: C8H4Cl2O2. SKYSEVEN Chemical provides industrial chemical supply and free CAS lookup tools.

Where can I buy Terephthaloyl chloride?

Request a quote on cnchemshop.com. SKYSEVEN Chemical supplies industrial grades with COA/SDS on request for export orders.

How do I verify CAS 100-20-9 data?

Cross-check PubChem / NIST / CAS Common Chemistry, and use our free CAS lookup tool. Always match CAS on COA and invoice.

Data is for informational reference only. Verify lot-specific values with COA/SDS. Not for medical advice.