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8.20138

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

for synthesis

Synonym(s):

1,2,4-Benzenetricarboxylic 1,2-anhydride, Trimellitic acid anhydride

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About This Item

Empirical Formula (Hill Notation):
C9H4O5
CAS Number:
552-30-7
Molecular Weight:
192.13
UNSPSC Code:
12352106
EC Index Number:
209-008-0
NACRES:
NA.22
MDL number:
MFCD00005925
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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

SMILES string

O1C(=O)c2c(ccc(c2)C(=O)O)C1=O

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

Analysis Note

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

signalword

Danger

Hazard Classifications

Eye Dam. 1 - Resp. Sens. 1 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

440.6 °F - closed cup

flash_point_c

227 °C - closed cup

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Global Trade Item Number

SKUGTIN
820138050004022536452746
820138010004022536452739