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85-44-9
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85-44-9
| Phthalic anhydride Basic information | |
| Product Name: | Phthalic anhydride |
| CAS: | 85-44-9 |
| MF: | C8H4O3 |
| MW: | 148.12 |
| EINECS: | 201-607-5 |
| Mol File: | 85-44-9.mol |
| Phthalic anhydride Chemical Properties | |
| Melting point | 131-134 °C(lit.) |
| Boiling point | 284 °C(lit.) |
| density | 1,53 g/cm3 |
| vapor density | 5.1 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | 1.4500 (estimate) |
| Fp | 152 °C |
| storage temp. | Store below +30°C. |
| solubility | 6g/l (slow decomposition) |
| form | Flaky Crystals |
| pka | 2.97[at 20 ℃] |
| color | White |
| PH | 2 (6g/l, H2O, 20℃) |
| Odor | Characteristic choking odor |
| PH Range | 2 at 6 g/l at 20 °C |
| explosive limit | 1.7-10.5%(V) |
| Water Solubility | 6 g/L (20 ºC) |
| Sensitive | Moisture Sensitive |
| Merck | 147,372 |
| BRN | 118515 |
| Henry's Law Constant | 6.29 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: TWA 6 mg/m3 (1 ppm), IDLH 60 mg/m3; OSHA PEL: TWA 12 mg/m3 (2 ppm); ACGIH TLV: TWA 1 ppm (adopted). |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air. |
| LogP | 2.07 at 20℃ |
| CAS DataBase Reference | 85-44-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Phthalic anhydride(85-44-9) |
| EPA Substance Registry System | Phthalic anhydride (85-44-9) |
Test Items | Executive Standards | Measured Value | ||
Superior Products | First Grade | Qualified Products | ||
Appearance |
White Flake Or Crystalline Powder | Scaly Or Crystalline Powder With White And Other Colors |
White Scaly | |
Melt Chroma (Chroma Number) ≤ |
20 |
50 |
100 |
20 |
Thermal Stability Chroma (Chroma Number) ≤ |
50 |
150 |
- |
50 |
Sulphuric Acid Chroma (Chroma Number) ≤ |
40 |
100 |
150 |
30 |
Crystallization Point/℃ ≥ |
130.5 |
130.3 |
130.0 |
130.7 |
Phthalic Anhydride Purity/% ≥ |
99.50 |
99.50 |
99.50 |
99.86 |
Mass Fraction Of Free Acid ≤ |
0.20 |
0.30 |
0.50 |
0.03 |
| Phthalic anhydride Basic information | |
| Product Name: | Phthalic anhydride |
| CAS: | 85-44-9 |
| MF: | C8H4O3 |
| MW: | 148.12 |
| EINECS: | 201-607-5 |
| Mol File: | 85-44-9.mol |
| Phthalic anhydride Chemical Properties | |
| Melting point | 131-134 °C(lit.) |
| Boiling point | 284 °C(lit.) |
| density | 1,53 g/cm3 |
| vapor density | 5.1 (vs air) |
| vapor pressure | <0.01 mm Hg ( 20 °C) |
| refractive index | 1.4500 (estimate) |
| Fp | 152 °C |
| storage temp. | Store below +30°C. |
| solubility | 6g/l (slow decomposition) |
| form | Flaky Crystals |
| pka | 2.97[at 20 ℃] |
| color | White |
| PH | 2 (6g/l, H2O, 20℃) |
| Odor | Characteristic choking odor |
| PH Range | 2 at 6 g/l at 20 °C |
| explosive limit | 1.7-10.5%(V) |
| Water Solubility | 6 g/L (20 ºC) |
| Sensitive | Moisture Sensitive |
| Merck | 147,372 |
| BRN | 118515 |
| Henry's Law Constant | 6.29 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: TWA 6 mg/m3 (1 ppm), IDLH 60 mg/m3; OSHA PEL: TWA 12 mg/m3 (2 ppm); ACGIH TLV: TWA 1 ppm (adopted). |
| Stability: | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air. |
| LogP | 2.07 at 20℃ |
| CAS DataBase Reference | 85-44-9(CAS DataBase Reference) |
| NIST Chemistry Reference | Phthalic anhydride(85-44-9) |
| EPA Substance Registry System | Phthalic anhydride (85-44-9) |
Test Items | Executive Standards | Measured Value | ||
Superior Products | First Grade | Qualified Products | ||
Appearance |
White Flake Or Crystalline Powder | Scaly Or Crystalline Powder With White And Other Colors |
White Scaly | |
Melt Chroma (Chroma Number) ≤ |
20 |
50 |
100 |
20 |
Thermal Stability Chroma (Chroma Number) ≤ |
50 |
150 |
- |
50 |
Sulphuric Acid Chroma (Chroma Number) ≤ |
40 |
100 |
150 |
30 |
Crystallization Point/℃ ≥ |
130.5 |
130.3 |
130.0 |
130.7 |
Phthalic Anhydride Purity/% ≥ |
99.50 |
99.50 |
99.50 |
99.86 |
Mass Fraction Of Free Acid ≤ |
0.20 |
0.30 |
0.50 |
0.03 |
