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1,2-Benzenedicarboxylic Anhydride 1,3-dihydro-2h-imidazol-2-on 1,3-dihydro-2H-imidazol-2-one 1,3-DIHYDRO-IMIDAZOL-2-ONE 1,3-dihydroimidazolone 1,3-dihydroisobenzofuran-1,3-dione 1,3-isobenzofurandione 1H-imidazol-2(3H)-one 2(3H)-Oxo-1H-imidazole 2,3-dihydro-1H-imidazol-2-one 2,3-DIHYDRO-IMIDAZOL-2-ONE 2,3-Dihydroimidazole-2-one 2-Benzofuran-1,3-dione 2-hydroxyimidazole 4-imidazolin-2-one AKOS BBS-00004337 Anhydrid kyseliny ftalove Anhydride phtalique anhydridephtalique anhydridephtalique(etatvitreux) anhydridephtalique(french) EINECS 201-607-5 isobenzofuran-1,3-dione MFCD00005918 o-Phthalic acid anhydride phthallic anhydride sd8591 shellsd-8591
Hazard Codes: Xn
Risk Statements: 22-37/38-41-42/43
22:? Harmful if swallowed?
37/38:? Irritating to respiratory system and skin?
41:? Risk of serious damage to eyes?
42/43:? May cause sensitization by inhalation and skin contact
Safety Statements: 23-24/25-26-37/39-46-22
23:? Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer)?
24/25:? Avoid contact with skin and eyes?
26:? In case of contact with eyes, rinse immediately with plenty of water and seek medical advice?
37/39:? Wear suitable gloves and eye/face protection?
46:? If swallowed, seek medical advice immediately and show this container or label?
22:? Do not breathe dust??
RIDADR: 2214
WGK Germany: 1
F: 10-21: Keep under argon. Sensitive to humidity.
HazardClass: 8
PackingGroup: III
Poison by ingestion. Experimental teratogenic effects. A corrosive eye, skin, and mucous membrane irritant. A common air contaminant. Combustible when exposed to heat or flame; can react with oxidizing materials. Moderate explosion hazard in the form of dust when exposed to flame.
? Phthalic anhydride , with CAS number of 85-44-9, can be called 1,2-Benzenedicarboxylic anhydride ; 1,3-Phthalandione ; 2-Benzofuran-1,3-dione ; Phthalandione ; Phthalanhydride ; Phthalic acid anhydride ; Retarder AK ; Vulkalent B/C ; Sconoc 5 . It is a?white crystalline solid with choking odour.?Phthalic anhydride (CAS NO.85-44-9) is a versatile intermediate in organic chemistry, in part because it is bifunctional and cheaply available. It is widely used in industry for the production of certain dyes. 3、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. It is also used for the manufacture of plasticizers, such as dioctyl phthalate, unsaturated polyester resins, and alkyd resins. Phthalic anhydride reacts with alcohols such as 2-ethylhexanol, and the products are often liquids that, when added to plastics, impart flexibility without adversely affecting the strength of the plastic. Most of these plasticizers are used for poly(vinyl chloride) flexibility. Dioctyl phthalate is a common plasticizer.
Acute toxicity - Oral, Category 4
Skin irritation, Category 2
Serious eye damage, Category 1
Skin sensitization, Category 1
Specific target organ toxicity \u2013 single exposure, Category 3
Respiratory sensitization, Category 1
Pictogram(s) | ![]() ![]() ![]() |
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Signal word | Danger |
Hazard statement(s) | H302 Harmful if swallowed H315 Causes skin irritation H318 Causes serious eye damage H317 May cause an allergic skin reaction H335 May cause respiratory irritation H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled |
Precautionary statement(s) | |
Prevention | P264 Wash ... thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P271 Use only outdoors or in a well-ventilated area. P284 [In case of inadequate ventilation] wear respiratory protection. |
Response | P301+P312 IF SWALLOWED: Call a POISON CENTER/doctor/\u2026if you feel unwell. P330 Rinse mouth. P302+P352 IF ON SKIN: Wash with plenty of water/... P321 Specific treatment (see ... on this label). P332+P313 If skin irritation occurs: Get medical advice/attention. P362+P364 Take off contaminated clothing and wash it before reuse. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P310 Immediately call a POISON CENTER/doctor/\u2026 P333+P313 If skin irritation or rash occurs: Get medical advice/attention. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P312 Call a POISON CENTER/doctor/\u2026if you feel unwell. P342+P311 If experiencing respiratory symptoms: Call a POISON CENTER/doctor/... |
Storage | P403+P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up. |
Disposal | P501 Dispose of contents/container to ... |
none
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Phthalic anhydride is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. This colourless solid is an important industrial chemical, especially for the large-scale production of plasticizers for plastics.
Phthalic anhydride is an important chemical intermediate in the plastics industry from which are derived numerous phthalate esters that function as plasticizers in synthetic resins. Phthalic anhydride itself is used as a monomer for synthetic resins such as glyptal, the alkyd resins, and the polyester resins.
Phthalic anhydride is also used as a precursor of anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein, and xanthene dyes.
Phthalic anhydride is used in the synthesis of primary amines, the agricultural fungicide phaltan, and thalidomide. Other reactions with phthalic anhydride yield phenolphthalein, benzoic acid, phthalylsulfathiazole (an intestinal antimicrobial agent), and orthophthalic acid.
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