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125733 Sigma-Aldrich

Phthalic anhydride

ReagentPlus®, 99%

  • CAS Number 85-44-9

  • Empirical Formula (Hill Notation) C8H4O3

  • Molecular Weight 148.12

  •  Beilstein/REAXYS Number 118515

  •  EC Number 201-607-5

  •  MDL number MFCD00005918

  •  PubChem Substance ID 57646985

  •  NACRES NA.21

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Properties

Related Categories Building Blocks, Carbonyl Compounds, Carboxylic Acid Anhydrides, Chemical Synthesis, Chemicals for the synthesis of candidate COVID-19 treatments,
Quality Level   200
vapor density   5.1 (vs air)
vapor pressure   <0.01 mmHg ( 20 °C)
product line   ReagentPlus®
assay   99%
autoignition temp.   1058 °F
expl. lim.   10.4 %
bp   284 °C (lit.)
mp   131-134 °C (lit.)
SMILES string   O=C1OC(=O)c2ccccc12
InChI   1S/C8H4O3/c9-7-5-3-1-2-4-6(5)8(10)11-7/h1-4H
InChI key   LGRFSURHDFAFJT-UHFFFAOYSA-N

Description

General description

Phthalic anhydride is an industrially important chemical. It can be prepared from o-xylene or naphthalene. It is widely used for the industrial preparation of plasticizers for PVC (polyvinyl chloride).
Phthalic anhydride can be synthesized via oxidation of o-xylene, in the presence of V2O5/TiO2 monolithic catalyst supported by aluminium honeycomb.

Application

Phthalic anhydride may be used in the synthesis of the following compounds:
• pthalimide
• phenolphthalein
• anthracene

Packaging

1 kg in poly bottle

2.5 kg in poly drum

16 kg in fiber drum

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Target organs 
Respiratory system
Personal Protective Equipment 
WGK Germany 
WGK 1
RTECS 
TI3150000
Flash Point(F) 
305.6 °F - DIN 51758
Flash Point(C) 
152 °C - DIN 51758

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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