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BENZOYL PEROXIDE |
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PRODUCT IDENTIFICATION |
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CAS NO. |
94-36-0 |
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| EINECS NO. | 202-327-6 | |||||||||||||||||||||||||||||||||||||||||||||
| FORMULA | (C6H5CO)2O2 | |||||||||||||||||||||||||||||||||||||||||||||
| MOL WT. |
242.23 |
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| H.S. CODE | 2916.32 | |||||||||||||||||||||||||||||||||||||||||||||
| TOXICITY | Oral rat LD50: >90 mL/kg | |||||||||||||||||||||||||||||||||||||||||||||
| SYNONYMS | Dibenzoyl Peroxide; Benoxyl; Benzac; | |||||||||||||||||||||||||||||||||||||||||||||
| Benzoic acid, peroxide; Benzol peroxide; Benzoperoxide; Benzoyl superoxide; Benzoylperoxid; Benzoylperoxyde; Benzaknen; Debroxide; Desanden; | ||||||||||||||||||||||||||||||||||||||||||||||
| DERIVATION |
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CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE |
white powder |
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| MELTING POINT | 103 - 105 C | |||||||||||||||||||||||||||||||||||||||||||||
| BOILING POINT | explodes | |||||||||||||||||||||||||||||||||||||||||||||
| SPECIFIC GRAVITY |
1.33 - 1.35 |
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| SOLUBILITY IN WATER | slightly soluble | |||||||||||||||||||||||||||||||||||||||||||||
| AUTOIGNITION | ||||||||||||||||||||||||||||||||||||||||||||||
| pH | ||||||||||||||||||||||||||||||||||||||||||||||
| VAPOR DENSITY | ||||||||||||||||||||||||||||||||||||||||||||||
| NFPA RATINGS | Health: 1; Flammability: 4; Reactivity: 4 | |||||||||||||||||||||||||||||||||||||||||||||
| FLASH POINT |
50 C |
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| STABILITY | Stable under normal conditions | |||||||||||||||||||||||||||||||||||||||||||||
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GENERAL DESCRIPTION & APPLICATIONS |
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| Peroxide: Compound containing the peroxy group (-O-O-), chainlike structure,
containing two oxygen atoms, each of which is bonded to the other and to a
radical or some element. It is considered that hydrogen peroxide is the starting
material to prepare organic and inorganic peroxides commercially. Hydrogen
Peroxide H2O2, is a powerful oxidizing agent. The most valuable property of
hydrogen peroxide is that it breaks down into water and oxygen and therefore
does not form any persistent, toxic residual compounds. It is used in the
processes of epoxidation, oxidation, hydroxylation and reduction. Its oxidizing
properties are used in the bleachings and deodorizing for textile, hair and in
paper manufacture. It is also used medicinally as an antiseptic. Its
application involves the production of chemicals like perhydrates as well as
organic peroxides in which some organic (or inorganic) substituents have
replaced one or both hydrogens. Some metals form peroxides in air sodium, barium
or zinc. Metal peroxide releases oxygen slowly in contact with atmospheric
moisture and used to as disinfectants in cosmetics, detergents, toothpaste and
pharmaceuticals. They can be used in the bleachings and deodorizing and a oxygen
release source in agricultural application to generate contaminated soils and
lakes. Organic Peroxides are powerful oxidizing agents releasing oxygen. They
are widely used as initiators,catalysts and crosslinking agent for the
polymerization process in the plastics manufacturing industry and as chemical
intermediates, bleaching agents, drying and cleaning agents. They are also used
as antiseptics, disinfectants and germicides medically for cosmetics,
detergents, toothpaste and pharmaceuticals. Organic peroxides are classified
in peroxydicarbonates, peroxyketals, peroxyesters, ketone
peroxides, hydroperoxides, dialkyl peroxides, diacyl peroxides by HMIS.
Benzoyl peroxide consists of two benzoyl groups linked by a peroxide chian. It is one of the general polymerization initiators for ethylene, vinylacetate, acrylates. PVC, unsaturated polyesters. It is used as a catalyst in oxidation and sulfonation reactions. It is also used in bleaching, disinfectant, drying, and cleaning agent. It is a strong free radical source containing more than 4.9% of active oxygen. The half-life temperatures are 73 C (for 10 hours), 92 C (1 for 1 hour) and 131 C (for 1 minute). It decomposes rapidly, causing fire and explosion hazard, on heating and under influence of light. It reacts violently with incompatible substances or ignition sources (acids, bases, reducing agents, and heavy metals). It should be stored in a dry and refrigerated (< 27C recommended or 38 C max) area and to keep away from reducing agents and incompatible substances. In pharmaceutical and food field, the release of oxygen from benzoyl peroxide provide an important application to use as a topical antibacterial used for burns and as a dermatologic agent in the treatment of acne and poison ivy. It shows drying and desquamative actions that promote evacuation of comedones. It has keratolytic function that promotes keratolysis (softening and dissolution or peeling of the horny layer of the epidermis). Topical keratolytic agents are beta hydroxy acids such as salicylic acid. Benzoyl peroxide is also used as an oxidizing agent in the treatment of decubital and stasis ulcers. KERATOLYTIC AGENTS
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| SALES SPECIFICATION | ||||||||||||||||||||||||||||||||||||||||||||||
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APPEARANCE |
white powder or clear solution |
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PEROXIDE CONTENT |
22.0wt% min, (or 27%, 75%, 95%) |
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| TRANSPORTATION | ||||||||||||||||||||||||||||||||||||||||||||||
| PACKING | ||||||||||||||||||||||||||||||||||||||||||||||
| HAZARD CLASS | 3, 5.2 (Packing Group: II) | |||||||||||||||||||||||||||||||||||||||||||||
| UN NO. | 3104, 2085, 2086, 2087, 2088, 2089, 2090 | |||||||||||||||||||||||||||||||||||||||||||||
| OTHER INFORMATION | ||||||||||||||||||||||||||||||||||||||||||||||
| Hazard Symbols: XI E, Risk Phrases: 2-36-43, Safety Phrases: 3-7-14-14a-36/37/39 | ||||||||||||||||||||||||||||||||||||||||||||||
