8.20138

1,2,4-Benzenetricarboxylic 1,2-anhydride

for synthesis

• Synonym(s): 1,2,4-Benzenetricarboxylic 1,2-anhydride, Trimellitic acid anhydride
• Empirical Formula (Hill Notation): C₉H₄O₅
• CAS Number: 552-30-7
• Molecular Weight: 192.13
• MDL number: MFCD00005925
• UNSPSC Code: 12352106
• EC Index Number: 209-008-0
• NACRES: NA.22

Properties

• vapor pressure: <1 Pa ( 20 °C)
• Quality Level: 200
• form: solid
• potency: >2730 mg/kg LD₅₀, oral (Rat); 23000 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 1-7 % (v/v)
• pH: 2 (20 °C, 21 g/L in H₂O)
• bp: 240 °C/19 hPa
• mp: 164-168 °C
• transition temp: flash point 227 °C
• density: 1.487 g/cm³ at 20 °C
• storage temp.: 2-30°C
• InChI: 1S/C9H4O5/c10-7(11)4-1-2-5-6(3-4)9(13)14-8(5)12/h1-3H,(H,10,11)
• InChI key: SRPWOOOHEPICQU-UHFFFAOYSA-N

Description

Analysis Note

Assay (morpholine method): ≥ 98.0 %
Melting range (lower value): ≥ 164 °C
Melting range (upper value): ≤ 168 °C
Identity (IR): passes test

Safety Information

• Pictograms: GHS05,GHS07,GHS08
• Signal Word: Danger
• Hazard Statements: H317 - H318 - H334 - H335
• Precautionary Statements: P261 - P271 - P272 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): 440.6 °F - closed cup
• Flash Point(C): 227 °C - closed cup