Phthalic Anhydride 99%
Brief Description
CAS No.: 201-607-5 | Other Names: Phthalic Anhydride 99% | MF: C6H4(CO)2O |
EINECS No.: 201-607-5 | Place of Origin: China (Mainland) | Grade Standard: Industrial Grade |
Brand Name: ODY |
Specifications
CAS RN.: 86-90-8
EINECS: 201-707-9
Molecular Weight: 227.0116
Molecular Formula: C8H3BrO3
Density: 1.911g/cm3
Precursor to dyestuffs
Phthalic anhydride is widely used in industry for the production of certain dyes. A well-known application of this reactivity is the preparation of the anthroquinone dye quinizarin by reaction with para-chlorophenol followed by hydrolysis of the chloride.
Item | Index | ||
Top grade | First grade | Qualified product | |
Appearance | white scaly or crystalline powder | white scaly or crystalline powder with slight colors | |
molten Chroma(Chroma no. )≤ | 20 | 50 | 100 |
thermostable Chroma(Chroma no. )≤ | 50 | 150 | - |
Chroma of vitriol(Chroma no. )≤ | 60 | 100 | 150 |
crystallization point°C≥ | 130.5 | 130.3 | 130.0 |
Purity(mass fraction)%≥ | 99.50 | 99.50 | 99.00 |
Free acid(mass fraction)≤ % | 0.20 | 0.30 | 0.50 |
Ash(mass fraction)%≤ | 0.05 | - | - |