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Sodium Chlorite

CAS No.
7758-19-2
Synonyms
Chlorous acid, sodium salt, Chlorite (sodium salt), Chlorine dioxide release mixture
Certificates
REACH

Sodium chlorite is the sodium salt of chlorous acid, with the chemical formula NaClO2. It is a white or slightly yellow-green crystal, and its aqueous solution is yellow-green. It reacts with acid to produce ClO2 gas.

Properties Application Structural Identifiers Specification Packing FAQ

Properties

Physical State	Liquid and Powder
Solubility	Solubility in water: 390g/L (17°C)..
Melting Point	180-200 °C
Alkalinity	Strongly alkaline
Density	2.468 g/cm3
Exact Mass	89.948451
Monoisotopic Mass	89.948451

Application

Disinfectant and fungicide

When mixed with an acidic solution, sodium chlorite is converted to chlorine dioxide, which is added to municipal water supplies to sterilize, disinfect, help control undesirable taste odors, remove iron and manganese plasma, and control trihalomethanes in drinking water. Sodium chlorite is used for disinfection and sterilization of drinking water, oil fields, waste water, Aquaculture industry, public sanitization in hospitals, schools, etc.

Ingredients

To make chlorine dioxide disinfectant tablets, mix with solid sodium chlorite.

Hair removal degreaser

Sodium chlorite is used for bleaching and depilatory degreasing of leather.

Bleaching agent

The aqueous solution of sodium chlorite has a stable bleaching ability under acidic conditions. It is mainly used for bleaching pulp, paper and various fibers, such as cotton, hemp, reed, viscose fiber, etc. It can also bleach white granulated sugar, flour, starch, oil and wax.

Antiseptic

Sodium chlorite can also be used as a food preservative to extend the shelf life of food, maintain the freshness of food and hygiene and safety.

Pesticides

In the planting of agricultural soil, sodium chlorite has a good insecticidal effect on pests and can replace pesticides to a certain extent.

Structural Identifiers

Linear Formula	NaClO₂
CAS No.	7758-19-2
MDL Number	MFCD00003478
EINECS No.	231-836-6
Beilstein/Reaxys No.	N/A
Pubchem CID	516902
IUPAC Name	sodium; chlorite
SMILES	[Na+].[O-]Cl=O
InChI Identifier	InChI=1S/ClHO2.Na/c2-1-3;/h(H,2,3);/q;+1/p-1
InChI Key	UKLNMMHNWFDKNT-UHFFFAOYSA-M
ChEBI	78667
UN NO.	UN 1495
Sodium ChloriteSynonyms:	Chlorous acid, sodium salt, Chlorite (sodium salt), Chlorine dioxide release mixture
Grades	Industrial grade
Groups	Bleaching Agents, Pulp & Paper, Textile Auxiliaries, Wood Pulp, Oxidizer, Paints, Reagents
MARKETS	Pulp, Paper & Packaging, Textiles

Specification

Available in liquid and powder

Liquid: Sodium Chlorite 25% and 31%

Powder: Sodium Chlorite 80% and 82%

Items	Unit	25%	31%
Color		Light yellow solution	Light yellow solution
NaClO₂	%	≥25	≥31
NaClO₃	%	≤0.6	≤0.8
NaOH	%	≤0.4	≤0.4
Na₂CO₃	%	≤0.3	≤0.4
NaCl	%	≤1.5	≤2.0
Na₂SO₄	%	≤0.1	≤0.1
NaNO₃	%	≤0.1	≤0.1
As	ppm	≤3 NaNO3 NaNO3	≤3
Hg	ppm	≤1	≤1
Pb	ppm	≤1	≤1

Items	Unit	80%	82%
Appearance		White or yellow-green crystal powder
NaClO₂	%	≥80	≥82
NaClO₃	%	≤1.1	≤3.5
NaOH	%	≤0.6	≤3.0
Na₂CO₃	%	≤0.8	≤2.0
NaCl	%	≤17	≤17
Na₂SO₄	%	≤0.8	≤3.0
NaNO₃	%	≤0.1	≤0.1
Arsenic	%	≤0.0003	≤0.0003

Packing

Liquid: 25Kg drum, 250kg drum, 1250kg IBC TANK

Powder: 50KG drums

Sodium Chlorite

FAQ

Q1: What is the importance of activation in the disinfection process?

A: Activation of sodium chlorite significantly increases the effectiveness of the disinfection process. Activated chlorine can kill various microorganisms such as bacteria, viruses and mushrooms, or inhibit their reproduction. It penetrates the cells of these microorganisms and damages their DNA or proteins, ultimately killing them. Therefore, the activation of sodium chlorite plays a crucial role in increasing the disinfection effect. It effectively and safely cleans and disinfects surfaces, water or other materials. However, it is important to note that activation must be done carefully and correctly to ensure optimal disinfection results.

Q2: What are the advantages of using sodium chlorite for disinfection?

A: A great advantage of using sodium chlorite is its effectiveness when killing pathogens. It can be used on both surfaces and in the air, making it a versatile solution. In addition, compared with other disinfectants, sodium chlorite is relatively stable to the environment and non-toxic to humans at low concentrations. It can also be used in conjunction with other disinfection methods for increased efficiency and protection.

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