Phthalic anhydride
SIAL/797995 - anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99%
Synonym: 1,2-
CAS Number: 85-44-9
Empirical Formula (Hill Notation): C8H4O3
Molecular Weight: 148.12
EC Number: 201-607-5
MDL Number: MFCD00005918
Linear Formula: C8H4O3
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 797995-500G
This image depicts SKU: 797995-500G
| anion traces | chloride (Cl-): ≤0.002% |
| sulfate (SO42-): ≤0.003% | |
| assay | ≥99% |
| autoignition temp. | 1058 °F |
| bp | 284 °C (lit.) |
| cation traces | Fe: ≤5 ppm |
| heavy metals: ≤5 ppm (by ICP) | |
| expl. lim. | 10.4 % |
| form | powder |
| functional group | anhydride |
| ester | |
| grade | ACS reagent |
| anhydrous | |
| ign. residue | ≤0.01% |
| InChI | 1S/C8H4O3/c9-7-5-3-1-2-4- |
| InChI key | LGRFSURHDFAFJT-UHFFFAOYSA |
| mp | 131-134 °C (lit.) |
| product line | Redi-Dri™ |
| Quality Level | 200  |
| SMILES string | O=C1OC(=O)c2ccccc12 |
| vapor density | 5.1 (vs air) |
| vapor pressure | <0.01 mmHg ( 20 °C) |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 500 g in poly bottle |
| Symbol |    GHS05,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H302 - H315 - H317 - H318 - H334 - H335 |
| Precautionary statements | P280 - P301 + P312 + P330 - P302 + P352 - P305 + P351 + P338 + P310 |
| Hazard Codes | Xn |
| Risk Statements | 22-37/38-41-42/43 |
| Safety Statements | 23-24/25-26-37/39-46 |
| WGK Germany | WGK 1 |
| Flash Point(F) | 305.6 °F - DIN 51758 |
| Flash Point(C) | 152 °C - DIN 51758 |
| Purity | ≥99% |
| bp | 284 °C (lit.) |
| mp | 131-134 °C (lit.) |
| UNSPSC | 12352100 |