p-Phthalic acid (CAS 100-21-0)

Chinese name: 对苯二甲酸

p-Phthalic acid is registered under CAS 100-21-0. Molecular formula: C8H6O4. Approximate molecular weight: 166.131. SKYSEVEN Chemical provides industrial chemical sourcing support and free CAS tools for global B2B buyers.

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Physical & identity data

CAS Number	100-21-0
English name	p-Phthalic acid
Chinese name	对苯二甲酸
Molecular formula	C8H6O4
Molecular weight	166.131
Melting point	300℃
Boiling point	572°C at 760 mmHg
Density	1.415g/cm3
Flash point	313.8°C
Refractive index	1.648
Vapor pressure	1.83E-15mmHgat25°C
HS code (ref.)	2917361100

Applications (reference)

是制造聚酯树脂、薄膜、纤维、绝缘漆和工程塑料等的重要原料

Related products at SKYSEVEN Chemical

• Terephthalic acid

Authority references

• PubChem
• NIST Chemistry WebBook
• CAS Common Chemistry

FAQ

What is CAS 100-21-0?

p-Phthalic acid is identified by CAS Registry Number 100-21-0. Molecular formula: C8H6O4. SKYSEVEN Chemical provides industrial chemical supply and free CAS lookup tools.

Where can I buy p-Phthalic acid?

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

How do I verify CAS 100-21-0 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.