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85-44-9 - Phthalic anhydride, 99% - 2,5-Isobenzofurandione - Benzene-1,2-dicarboxylic anhydride - A14955 - Alfa Aesar

A14955 Phthalic anhydride, 99%

Codice CAS
85-44-9
Sinonimi
2,5-Isobenzofurandione
Benzene-1,2-dicarboxylic anhydride

Dimensioni Prezzo ($) Quantità Disponibilità
100g 14,90
1000g 20,60
5000g 61,90
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Phthalic anhydride, 99%

MDL
MFCD00005918
EINECS
201-607-5

Proprietà chimiche

Formula
C8H4O3
Peso formula
148.12
Punto di fusione
130-134°
Punto di ebollizione
295° subl.
Punto di infiammabilità
152°(305°F)
Densità
1.53
Sensibilità
Moisture Sensitive
Solubilità
Soluble in water, carbon disulfide, ethanol, acetone and benzene. Slightly soluble in ethyl ether.

Applicazioni

Phthalic anhydride is used in the preparation of primary amines. It is used as a precursor to prepare anthraquinone, phthalein, rhodamine, phthalocyanine, fluorescein and xanthene dyes. It serves as an important intermediate in the plastics industry, dyes, resins and pigments. It is used as a monomer for synthetic resins such as glyptal, alkyd resins and polyester resins. It plays a vital role in the large-scale production of plasticizers for plastics. Further, it acts as a curing agent for epoxy resins, anti-scaling agents, plating agents, surface treating agents, ion exchange agents, paint additives, adhesives, sealant chemicals and potential antibacterial agent.

Note

Moisture sensitive. Incompatible with strong oxidizing agents, strong bases, strong reducing agents and strong acids.

Letteratura

For examples of formation of phthalimides from amines, see: Org. Synth. Coll., 4, 106 (1963); 5, 973 (1973). As an alternative to hydrazinolysis, ɑ-amino acids can also be quantitatively recovered from their phthaloyl derivatives by prolonged reaction with aqueous methylamine at room temperature: Can. J. Chem., 48, 3572 (1970).

Can be used for the dehydration of nitro aldols to nitroalkenes; see, e.g.: Org. Synth. Coll., 7, 396 (1990).

Reaction with H2O2 gives monoperphthalic acid, useful in peroxidation reactions; see, e.g.: Org. Synth. Coll., 3, 619 (1955); 5, 805 (1973). With urea hydrogen peroxide, provides a superior system for converting N-heteroaromatics and tert-amines to their N-oxides: Chem. Ber., 125, 1965 (1992)

Liu, Y.; Gu, Y.; Hou, Y.; Yang, Y.; Deng, S.; Wei, Z. Hydrophobic activated carbon supported Ni-based acid-resistant catalyst for selective hydrogenation of phthalic anhydride to phthalide. Chem. Eng. J. 2015, 275, 271-280.

Lin, Z.; Ierapetritou, M.; Nikolakis, V. Phthalic anhydride production from hemicellulose solutions: Technoeconomic analysis and life cycle assessment. AlChE J. 2015, 61 (11), 3708-3718.

Rischio GHS e dichiarazioni precauzionali

Dichiarazioni di rischio (UE): H334-H317-H318-H315-H302-H335

May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. Causes serious eye damage. Causes skin irritation. Harmful if swallowed. May cause respiratory irritation.

Dichiarazioni precauzionali: P285-P261-P280-P305+P351+P338-P304+P340-P310-P342+P311-P362-P405-P501a

In case of inadequate ventilation wear respiratory protection. Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Immediately call a POISON CENTER or doctor/physician. If experiencing respiratory symptoms: Call a POISON CENTER or doctor/physician. Take off contaminated clothing and wash before reuse. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Altri riferimenti

Merck
14,7372
Beilstein
118515
Classe di rischio
8
Gruppo di imballaggio
III
Codice tariffe armonizzato
2917.35
TSCA
Yes
RTECS
TI3150000

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