What is Sodium Perborate CAS 7632-04-4?

Sodium Perborate is an inorganic peroxide salt, also known as sodium peroxometaborate, with EC number 231-556-4 and a general formula NaBO3.nH2O. It is supplied as an odorless white crystalline powder or granules and acts as a stable solid source of active oxygen.

What is the difference between sodium perborate monohydrate and tetrahydrate?

The commercial forms are NaBO3.H2O monohydrate and NaBO3.4H2O tetrahydrate. The monohydrate has higher active oxygen, typically around 15-16%, dissolves faster, and is more suitable for lower-temperature or concentrated formulations, while tetrahydrate normally provides about 10% active oxygen.

How does Sodium Perborate release its bleaching action?

In water it hydrolyzes to release hydrogen peroxide and borate, and the hydrogen peroxide provides the oxidizing and bleaching effect. The reaction is faster with heat or moisture, and a TAED activator is commonly used to improve oxygen release at lower wash temperatures.

What are the main uses of Sodium Perborate?

It is mainly used as an oxygen-based bleach in powder laundry detergents, automatic dishwasher detergents, stain removers, and industrial cleaning formulations. It also finds use in textile and pulp bleaching, disinfection, and as an oxidizing agent in selected personal-care or laboratory products.

Why is Sodium Perborate described as a gentler bleach?

Compared with chlorine-based bleaches such as sodium hypochlorite, Sodium Perborate releases oxygen more gradually and is less aggressive to dyed textiles and fibers. This controlled release is useful where cleaning and whitening are needed without harsh chlorine degradation.

How should Sodium Perborate be stored?

Store it in tightly closed containers in a cool, dry, well-ventilated area, away from heat, moisture, acids, and combustible materials. Because it is an oxidizing solid, dry storage and separation from incompatible substances help preserve active oxygen and safe handling.

Sodium Perborate CAS 7632-04-4

Sodium Perborate, also called sodium peroxometaborate, CAS 7632-04-4, is an oxygen-based oxidizing additive supplied as an odorless white crystalline powder or granules, positioned for detergent, cleaning and bleaching systems requiring controlled active-oxygen release. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 7632-04-4
Synonyms: Sodium perborate monohydrate / tetrahydrate (depending on form)
Einecs: 231-556-4
Molecular Formula: NaBO₃·nH₂O
Grade: Industrial grade / formulation grade oxidizing agent
Package: Standard export packaging

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Product Description

Sodium Perborate CAS 7632-04-4 is an inorganic peroxide salt with EC 231-556-4 and general formula NaBO3·nH2O.

Synonyms: Sodium peroxometaborate; sodium perborate monohydrate / tetrahydrate (depending on form).

CAS: 7632-04-4.

Molecular formula: NaBO3·nH2O.

It is supplied as an odorless white crystalline powder or granules.

It acts as a stable solid source of active oxygen that hydrolyzes in water to release hydrogen peroxide and borate.

It is positioned as an oxygen-based oxidizing additive for detergent, cleaning and bleaching systems.

It is used as an oxygen-based bleach in powder laundry detergents, automatic dishwasher detergents, stain removers, and industrial cleaning formulations.

It is also used in textile and pulp bleaching, disinfection, and selected oxidizing applications.

The monohydrate has higher active oxygen (about 15-16%) and dissolves faster, while the tetrahydrate provides about 10% active oxygen.

A TAED activator is commonly used to improve oxygen release at lower wash temperatures.

Confirm the required hydrate form, active oxygen content, appearance, and related specifications for the chosen grade.

Check compatibility with the target detergent, cleaning or bleaching formulation and processing conditions.

Store in tightly closed, moisture-resistant containers in a cool, dry, well-ventilated area, away from heat, moisture, acids and combustible materials.

Use appropriate PPE and keep the oxidizing solid separated from incompatible and reducing substances.

Confirm packaging suitable for the solid oxidizing form and order quantity, and follow the current SDS.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sodium Perborate CAS 7632-04-4?

A: Sodium Perborate is an inorganic peroxide salt, also known as sodium peroxometaborate, with EC number 231-556-4 and a general formula NaBO3.nH2O. It is supplied as an odorless white crystalline powder or granules and acts as a stable solid source of active oxygen.
Q:
What is the difference between sodium perborate monohydrate and tetrahydrate?

A: The commercial forms are NaBO3.H2O monohydrate and NaBO3.4H2O tetrahydrate. The monohydrate has higher active oxygen, typically around 15-16%, dissolves faster, and is more suitable for lower-temperature or concentrated formulations, while tetrahydrate normally provides about 10% active oxygen.
Q:
How does Sodium Perborate release its bleaching action?

A: In water it hydrolyzes to release hydrogen peroxide and borate, and the hydrogen peroxide provides the oxidizing and bleaching effect. The reaction is faster with heat or moisture, and a TAED activator is commonly used to improve oxygen release at lower wash temperatures.
Q:
What are the main uses of Sodium Perborate?

A: It is mainly used as an oxygen-based bleach in powder laundry detergents, automatic dishwasher detergents, stain removers, and industrial cleaning formulations. It also finds use in textile and pulp bleaching, disinfection, and as an oxidizing agent in selected personal-care or laboratory products.
Q:
Why is Sodium Perborate described as a gentler bleach?

A: Compared with chlorine-based bleaches such as sodium hypochlorite, Sodium Perborate releases oxygen more gradually and is less aggressive to dyed textiles and fibers. This controlled release is useful where cleaning and whitening are needed without harsh chlorine degradation.
Q:
How should Sodium Perborate be stored?

A: Store it in tightly closed containers in a cool, dry, well-ventilated area, away from heat, moisture, acids, and combustible materials. Because it is an oxidizing solid, dry storage and separation from incompatible substances help preserve active oxygen and safe handling.

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