Trimellitic Anhydride (552-30-7)
1. Basic Information
1. Chemical Name: Trimellitic Anhydride
2. Chinese Aliases: Trimellitic Anhydride; Trimellitic Acid Anhydride; PTA; 1,2,4-Benzenetricarboxylic Anhydride; Benzene-1,2,4-tricarboxylic Anhydride; Phthalic Anhydride-4-carboxylic Acid; TMA
3. English Name: Trimellitic Anhydride
4. Molecular Formula: C9H4O5
5. Molecular Weight: 192.13
6. CAS Number: 552-30-7
7. EINECS Number: 209-008-0
8. Appearance: White or light yellow flake or granular solid
2. Technical Parameters
Item
Standard
Premium Quality
Appearance
White or slightly colored flaky solid
Trimellitic Anhydride, wt% ≥
96.5
95.0
Phthalic Anhydride, wt% ≤
0.05
0.10
Acid Value (as KOH)/(mg/g) ≥
873
865
Melting Color / Hazen Unit (Platinum-Cobalt Scale) ≤
130
150
(The above parameters are for reference only; please refer to the factory inspection report for actual values.)
3. Packaging Specifications
1. 25KG/bag
2. 500kg or 1000kg inner plastic woven bag