Benzoyl peroxide
CAS Number: 94-36-0
Chemical Formula: C14H10O4
Synonyms:
Benzoyl peroxide[content ≤62%, inert solid content ≥28%, water content ≥10%]
Benzoyl peroxide[content ≤42%, stable dispersion in water]
Benzoyl peroxide[77% < content ≤94%, water content ≥6%]
Appearance: White Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Benzoyl peroxide CAS#94-36-0
Benzoyl peroxide is an odorless white or colorless crystalline powder with a faint benzaldehyde scent, produced by reacting benzoyl chloride with cooled sodium peroxide solution. It is used in specific cheeses at a milk ratio of 0.0002%. It also serves as a flour bleaching agent that decomposes gradually to achieve full whitening effects, yielding lighter flour and bread. The main decomposition product of benzoyl peroxide in water is benzoic acid, with trace amounts of phenyl benzoate, phenol, and hydroxybenzoic acids also detected. Identical byproducts form when carbon‑14 labeled benzoyl peroxide reacts with whey.
Workers in electronics, plastics (epoxy resins and catalysts), ceramics, dentistry, laboratories, and baking may encounter benzoyl peroxide. It has also caused contact dermatitis in sacristans due to its presence in candles, while some positive test results lack clear occupational links.
Parameters
| Melting point | 105 °C(lit.) |
| Boiling point | 176°F |
| bulk density | 500-600kg/m3 |
| density | 1.16 g/mL at 25 °C(lit.) |
| vapor pressure | 0.009Pa at 25℃ |
| refractive index | 1.5430 (estimate) |
| Fp | >230 °F |
| storage temp. | 2-8°C |
| solubility | 0.35mg/l |
| form | powder |
| color | White |
| Odor | odorless |
| Water Solubility | Insoluble |
| Merck | 14,1116 |
| BRN | 984320 |
| Exposure limits | TLV-TWA 5 mg/m3; IDLH 7000 mg/m3. |
| Stability: | Strong oxidizer. Highly flammable. Do not grind or subject to shock or friction. Incompatible with reducing agents, acids, bases, alcohols, metals, organic materials. Contact with combustible material, heating or friction may cause fire or explosion. |
| Cosmetics Ingredients Functions | OXIDISING |
| InChIKey | OMPJBNCRMGITSC-UHFFFAOYSA-N |
| LogP | 3.2 at 20℃ |
| CAS DataBase Reference | 94-36-0(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzoyl peroxide(94-36-0) |
| IARC | 3 (Vol. 36, Sup 7, 71) 1999 |
| EPA Substance Registry System | Benzoyl peroxide (94-36-0) |
Safety Information
| Hazard Codes | O,Xn,N,Xi,E,T |
| Risk Statements | 8-36/37/38-43-36-2-7-1-51/53-21/22-62-50-61-3-39/23/24/25-40 |
| Safety Statements | 53-17-26-36/37-45-60-36/37/39-3/7-14A-14-47-35-7-61-37/39-24 |
| OEB | B |
| OEL | TWA: 5 mg/m3 |
| RIDADR | UN 3108 5.2 |
| WGK Germany | 2 |
| RTECS | DM8575000 |
| Autoignition Temperature | 176 °F |
| TSCA | TSCA listed |
| HazardClass | 5.2 |
| PackingGroup | II |
| HS Code | 29163200 |
| Hazardous Substances Data | 94-36-0(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 7710 mg/kg |
| IDLA | 1,500 mg/m3 |
Product Application of Benzoyl peroxide CAS#94-36-0
Benzoyl peroxide is a commonly used organic peroxide compound. It acts as a free‑radical source in numerous organic synthesis processes and initiates polymerization of styrene, vinyl chloride, vinyl acetate, and acrylic monomers. It is used to cure thermoset polyester resins and silicone rubbers. In medical applications, it treats acne. It also functions as a bleaching agent for vegetable oils, cheeses, flour, and fats.
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