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 is positioned as an oxygen-based oxidizing additive used in industrial and formulation systems requiring controlled release of active oxygen. It is commonly incorporated into detergent formulations, cleaning agents, and bleaching systems where stable oxidizing performance is required under storage conditions and activation occurs during use. Sodium Percarbonate is a related oxygen-release bleaching ingredient to compare by active oxygen, storage stability and detergent-system requirements.

In industrial supply, it is typically provided as a solid powder or granulated material with stabilized handling characteristics. It is mainly used as a formulation component in solid cleaning products rather than a standalone reactive chemical in processing systems. Standard export packaging is available, along with technical documentation such as COA, TDS, and SDS for procurement and formulation development support.

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: Available in standard export packaging; packaging format arranged according to order volume and storage requirements

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Product Description

1 Physicochemical Properties

2 Typical Applications

3 Packaging

4 Storage

Physicochemical Properties

Item	Description
Appearance	White crystalline powder or granules
Odor	Odorless
Active Oxygen Content	Hydration-dependent; releases hydrogen peroxide in aqueous solution
Solubility	Soluble in water with hydrolysis
Stability	Stable under dry storage conditions; decomposes in moist or hot environments
pH (aqueous solution)	Weakly alkaline
Density	Bulk density varies by grade and particle form
Decomposition Temperature	Releases active oxygen upon heating or in solution

Typical Applications

Laundry detergents: Used as an oxygen-based bleaching agent in powder detergent systems.
Cleaning formulations: Applied in household and industrial cleaning products for stain removal and whitening effects.
Bleaching systems: Functions as a low-temperature oxygen release source in textile and surface treatment processes.
Industrial cleaning additives: Used in formulations requiring controlled oxidation performance.

Application suitability should be evaluated based on formulation stability and regulatory requirements for oxidizing agents.

For related oxygen-release and borate salt pages, review Sodium Perborate Tetrahydrate, Sodium Percarbonate, and Sodium Tetraborate Decahydrate.

Packaging

Sodium Perborate is supplied as a solid oxidizing material and packed in moisture-resistant, sealed packaging to ensure stability during storage and transportation. Common packaging formats include multi-layer bags with inner liners or fiber drums designed for oxidizing chemicals.

Packaging is designed to prevent moisture exposure and contamination, which may trigger decomposition. Bulk supply and palletized shipment options are available depending on order volume and logistics requirements.

Storage

Store in a cool, dry, and well-ventilated area. Keep containers tightly sealed and away from moisture, heat sources, and reducing agents.

Avoid contamination with organic materials or incompatible substances to maintain product stability during storage and handling.

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.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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