8.01641

Benzoyl peroxide

(with 25% H₂O) for synthesis

• Synonym(s): Benzoyl peroxide, Dibenzoyl peroxide
• Empirical Formula (Hill Notation): C₁₄H₁₀O₄
• CAS Number: 94-36-0
• Molecular Weight: 242.23
• MDL number: MFCD00003071
• UNSPSC Code: 12352120
• EC Index Number: 202-327-6
• NACRES: NA.22

Properties

• vapor pressure: <1 hPa ( 20 °C)
• Quality Level: 200
• form: crystals
• autoignition temp.: >380 °C
• potency: 7710 mg/kg LD₅₀, oral (Rat)
• reaction suitability: reagent type: oxidant
• mp: 100-105 °C (decomposition)
• density: 1.33 g/cm³ at 25 °C
• bulk density: 500‑600 kg/m³
• functional group: peroxide
• storage temp.: 15-25°C
• InChI: 1S/C14H10O4/c15-13(11-7-3-1-4-8-11)17-18-14(16)12-9-5-2-6-10-12/h1-10H
• InChI key: OMPJBNCRMGITSC-UHFFFAOYSA-N

Description

General description

Benzoyl peroxide is an organic peroxide commonly used to initiate free radical polymerizations and to form copolymers through grafting reactions. It is also used as an oxidizer during chemical reactions.

Application

Benzoyl peroxide is used:

• In the direct N–O bond synthesis from 1,2-diamines.
• As an initiator in the synthesis of the cross-linked unsaturated copolymer by cross-linking methyl methacrylate with Poly (2-butene maleate) polyester.

Analysis Note

Assay (iodometric): 72,0 - 77,0 %(m)
Melting range (after drying): 102 - 105 °C
Identity (IR): conforms

Safety Information

• Pictograms: GHS02,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H242 - H317 - H319 - H410
• Precautionary Statements: P210 - P235 - P273 - P280 - P370 + P378 - P410
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Org. Perox. C - Skin Sens. 1A
• Storage Class Code: 4.1A - Other explosive hazardous materials
• WGK: WGK 2