Perodox L75

BPO75is an initiator (powder formulation with 75% benzoyl peroxide and 25% water) used for curing unsaturated polyester, vinyl ester and acrylic thermoset resins
at ambient or slightly elevated temperatures. It is often used in conjuction with tertiary amineaccelerators at ambient conditions. Typical uses include cast polymer, panels,
chemical anchors and mine bolts and RTM.

CAS No.

94-36-0

TSCA Status

listed on inventory

EINECS/ELINCS No.

202-327-6

Molecular weight

242.2

BPO75can be used for the market segments: polymer production, thermoset composites and acrylics production with their different applications/functions. Formore information please check our website and/or contact us.

Benzoyl peroxide is the most widely used initiator in polymerization reactions, mainly used as an initiator and crosslinking agent for solvent polymerization of PVC, polyacrylonitrile, acrylate, and vinyl acetate, grafting polymerization of chloroprene rubber, SBS and methyl methacrylate, curing of unsaturated polyester resin, and organic glass adhesive. Used as a vulcanizing agent and crosslinking agent for silicone rubber and fluororubber in the rubber industry. It can also be used as a bleaching agent and oxidant in chemical production. Benzoyl peroxide has a whitening effect on wheat flour. On February 11, 2011, six ministries including the Ministry of Health of China issued a notice prohibiting the addition of benzoyl peroxide and calcium peroxide in flour production from May 1, 2011. Food additive production enterprises are not allowed to produce or sell food additives such as calcium peroxide and benzoyl peroxide.

Organic peroxides are thermally unstable substances, which may undergo self-accelerating decomposition. The lowest temperature at which self-accelerating decomposition of a substance in the original packaging may occur is the Self-Accelerating Decomposition Temperature (SADT). The SADT is determined on the basis of the Heat Accumulation Storage Test.

SADT 80°C

Emergencytemperature (Tₑ ) 75°C

Method The Heat Accumulation Storage Test is a recognized test method for the determinationof the SADT of organic peroxides (see Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria - United Nations, New York and Geneva).

Due to the relatively unstable nature of organic peroxides a loss of quality can be detected over a period of time. To minimize the loss of quality, Do Sender Chem recommends a maximum storage temperature (Ts max. ) for each organic peroxide.

TsMax. 40°C

Note When stored under the recommended storageconditions, BPO75 will remain within theDo Sender Chem specifications for a periodof at least 3 months after delivery.

Packed in plastic drums with specifications of 25kg.

BPO75 is classified as Organic peroxide type C; solid, Division 5.2; UN 3104; PG II.

Carbon dioxide, Benzene, Benzoic acid