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| Classification | Paint Additives |
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85-44-9
C8H4O3
Applications:
Phthalic anhydride is primarily a chemical intermediate used in the manufacture of:
1. phthalate plasticizers
2. unsaturated polyester resins (UPR)
3. alkyd resins for paints and varnishes
4. polyester polyols
5. allyl resins
6. Pigments and dyes
7. Pesticide chemicals
| Name | Phthalic anhydride |
| Synonyms | AKOS BBS-00004337 anhydridephtalique Phthalic anhydride Anhydride phtalique o-Phthalic anhydride 2-Benzofuran-1,3-dione 2,5-Isobenzofurandione 2-benzofuran-1,3-dione Anhydrid kyseliny ftalove anhydridephtalique(french) anhydridephtalique(etatvitreux) 1,2-Benzenedicarboxylic Anhydride 2,2′-(oxydicarbonyl)dibenzoic acid |
| CAS | 85-44-9 |
| EINECS | 201-607-5 |
| InChI | InChI=1/C16H10O7/c17-13(18)9-5-1-3-7-11(9)15(21)23-16(22)12-8-4-2-6-10(12)14(19)20/h1-8H,(H,17,18)(H,19,20) |
| Molecular Formula | C8H4O3 |
| Molar Mass | 148.12 |
| Density | 1,53 g/cm3 |
| Melting Point | 131-134°C(lit.) |
| Boling Point | 284°C(lit.) |
| Flash Point | 152 °C |
| Water Solubility | 6 g/L (20 ºC) |
| Solubility | 6g/l (slow decomposition) |
| Vapor Presure | <0.01 mm Hg ( 20 °C) |
| Vapor Density | 5.1 (vs air) |
| Appearance | Flaky Crystals |
| Color | White |
| Odor | Characteristic choking odor |
| Exposure Limit | NIOSH REL: TWA 6 mg/m3 (1 ppm), IDLH 60 mg/m3; OSHA PEL: TWA 12mg/m3 (2 ppm); ACGIH TLV: TWA 1 ppm (adopted). |
| Merck | 14,7372 |
| BRN | 118515 |
| PH | 2 (6g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, moisture, strong acids. Dust may form an explosive mixture with air. |
| Sensitive | Moisture Sensitive |
| Explosive Limit | 1.7-10.5%(V) |
| Refractive Index | 1.4500 (estimate) |
| Physical and Chemical Properties | Character White needle-like crystals, with a slight odor. melting point 131.6 ℃ boiling point 295 ℃ relative density 1.527 flash point 151.7 ℃ solubility slightly soluble in hot water and ether, soluble in ethanol, benzene and pyridine. |
| Use | Used as analytical reagents, but also for organic synthesis |
| Hazard Symbols | Xn – Harmful |
| Risk Codes | R22 – Harmful if swallowed R37/38 – Irritating to respiratory system and skin. R41 – Risk of serious damage to eyes R42/43 – May cause sensitization by inhalation and skin contact. |
| Safety Description | S23 – Do not breathe vapour. S24/25 – Avoid contact with skin and eyes. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 – Wear suitable gloves and eye/face protection S46 – If swallowed, seek medical advice immediately and show this container or label. S22 – Do not breathe dust. |
| UN IDs | 2214 |
| WGK Germany | 1 |
| RTECS | TI3150000 |
| FLUKA BRAND F CODES | 10-21 |
| TSCA | Yes |
| HS Code | 29173500 |
| Hazard Class | 8 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 1530 mg/kg LD50 dermal Rabbit > 3160 mg/kg |
| Raw Materials | o-Xylene o-Xylene Naphthalene |
| Downstream Products | 4-Hydroxy-4-methyl-2-pentanone Butyl ether Anthraquinone Tetrachlorophthalic anhydride Tetrabromophthalic anhydride 1,4-Dihydroxyanthraquinone 2-Benzoylbenzoic acid Phthalimide N-(Hydroxymethyl)phthalimide Benzanthrone 2-Ethylanthraquinone Diallyl Phthalate |
Declaration: The products displayed on this website are intended exclusively for industrial applications or scientific research. They are not intended for medical, pharmaceutical, or food use. In accordance with applicable laws and regulations, purchasing organizations must hold valid qualifications and approvals.
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