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797995 Sigma-Aldrich

Phthalic anhydride

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥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 329768627

  •  NACRES NA.21

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Properties

Related Categories Chemical Synthesis, Chemicals for the synthesis of candidate COVID-19 treatments, Darunavir More...
Quality Level   200
grade   ACS reagent
  anhydrous
vapor density   5.1 (vs air)
vapor pressure   <0.01 mmHg ( 20 °C)
product line   Redi-Dri
assay   ≥99%
form   powder
autoignition temp.   1058 °F
expl. lim.   10.4 %
ign. residue   ≤0.01%
bp   284 °C (lit.)
mp   131-134 °C (lit.)
anion traces   chloride (Cl-): ≤0.002%
  sulfate (SO42-): ≤0.003%
cation traces   Fe: ≤5 ppm
  heavy metals (as Pb): ≤5 ppm
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

Packaging

500 g in poly bottle

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Target organs 
Respiratory system
WGK Germany 
WGK 1
Flash Point(F) 
305.6 °F - DIN 51758
Flash Point(C) 
152 °C - DIN 51758
Protocols & Articles

Articles

Enjoy the Free-flowing Experience - Redi-Dri™

What is the most frustrating moment you have experienced in the lab? Inadequate chemicals for the reaction? Or rock-solid material as you open your bottle when you only need a small amount? If you ha...
Keywords: Environmental

Protocols

Redi-Dri™ FAQs

A time study was performed to test the Red-Dri Packaging System against standard packaging. Equivalent units of both packaging systems containing potassium chloride (KCl) were introduced to a control...
Keywords: Absorption

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