Hydrous Benzoyl Peroxide BP

Benzoyl peroxide (BPO) is a medication and industrial chemical. It appears as a white powder, practically insoluble in water.


As a medication, it is used to treat mild to moderate acne Also used for Bleaching hair, and tooth whitening systems.


Chemical Name: Hydrous Benzoyl Peroxide
Mol. Formula: C14H10O4
Mol. Weight: 242.2 g/mol
CAS No.: 94-36-0


General Specifications

Test Specification
Appearance White or almost white, amorphous or granular powder.

Test A

Test B

Test C


Test D


1.       Ultraviolet and visible absorption spectrophotometry

2.       Infrared absorption spectrophotometry

3.       Specified test. A red color develops which quickly darkens and becomes dark violet within 5 min.

Specified test. A solution gives reaction of benzoates

Solubility Practically insoluble in water, soluble in acetone, soluble in methylene chloride with the separation of water, slightly soluble in ethanol (96%).

It loses water rapidly on exposure to air with a risk of explosion.

Acidity Specified test.
Related substances:

1.       impurity A

2.       impurity B

3.       impurity C

4.       unspecified impurities


1.       Not more than 0.25%

2.       Not more than 1.5%

3.       Not more than 0.25%

4.       Not more than 0.10%

Chlorides Not more than 0.4%

1.       Dibenzoyl peroxide

2.       Water


1.       Not less than 70.0% and not more than 77.0%

2.       Not less than 20.0%


Shelf life, Storage and Packing

It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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