Description Uses Production Identification Test Content Analysis Toxicity References
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Sodium chlorite

Description Uses Production Identification Test Content Analysis Toxicity References
Product Name
Sodium chlorite
CAS No.
7758-19-2
Chemical Name
Sodium chlorite
Synonyms
CHLORITE;textile;orite;UN1496;TEXTONE;alcideld;neosiloxd;ALCIDEALLAY;CHLORITE ION;Natriumchlorit
CBNumber
CB8854304
Molecular Formula
ClNaO2
Formula Weight
90.44
MOL File
7758-19-2.mol
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Sodium chlorite Property

Melting point:
190 °C (dec.)
Density 
2.5 g/cm3
vapor pressure 
0Pa at 25℃
solubility 
Methanol (Slightly), Water (Slightly)
form 
Powder
color 
White
Odor
odorless
PH Range
10 - 11
explosive limit
7%
Water Solubility 
39 g/100 mL (17 ºC)
Sensitive 
Hygroscopic
Merck 
14,8600
Dielectric constant
6.1(Ambient)
Stability:
Stable. Incompatible with phosphorus, sulphur, zinc, ammonia, finely powdered metals, strong reducing agents, acids, organic materials.
LogP
-2.7 at 25℃
CAS DataBase Reference
7758-19-2(CAS DataBase Reference)
IARC
3 (Vol. 52) 1991
EPA Substance Registry System
Sodium chlorite (7758-19-2)
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Safety

Hazard Codes 
O,Xn,T+,T,N
Risk Statements 
8-22-24-32-34-9-26-25-14-36/37/38-21-50
Safety Statements 
17-26-36/37/39-45-50A-38-36-61-28
RIDADR 
UN 2813 4.3/PG 3
WGK Germany 
2
RTECS 
VZ4800000
TSCA 
Yes
HazardClass 
5.1
PackingGroup 
II
HS Code 
28289000
Hazardous Substances Data
7758-19-2(Hazardous Substances Data)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H271May cause fire or explosion; strong oxidiser

H302Harmful if swallowed

H310Fatal in contact with skin

H314Causes severe skin burns and eye damage

H373May cause damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
8.14815
Product name
Sodium chlorite
Purity
(25% solution in water) for synthesis
Packaging
250ML
Price
$40
Updated
2024/03/01
Sigma-Aldrich
Product number
8.14815
Product name
Sodium chlorite
Purity
(25% solution in water) for synthesis
Packaging
1L
Price
$85.9
Updated
2024/03/01
Sigma-Aldrich
Product number
244155
Product name
Sodium chlorite
Purity
technical grade, 80%
Packaging
5g
Price
$56.5
Updated
2024/03/01
Sigma-Aldrich
Product number
244155
Product name
Sodium chlorite
Purity
technical grade, 80%
Packaging
1kg
Price
$154
Updated
2024/03/01
Sigma-Aldrich
Product number
244155
Product name
Sodium chlorite
Purity
technical grade, 80%
Packaging
45KG
Price
$4660
Updated
2024/03/01
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Sodium chlorite Chemical Properties,Usage,Production

Description

Sodium chlorite (NaClO2) is a white crystalline solid that can accelerate the burning of organic substances. It is widely used in various industries, including paper manufacturing, water purification, wood pulp bleaching, textiles, fats and oils, as a disinfectant, and in many other fields. In organic synthesis, sodium chlorite is often used to convert aldehydes to carboxylic acids and alkyl furans to 4-oxo-2-alkenoic acids. Moreover, when combined with an acid such as citric acid, acidified sodium chlorite can be used to sanitize surfaces and rinse a variety of foods. In the military, sodium chlorite can be used to combat contaminants such as harmless microbes and food pathogens.

Uses

Sodium chlorite is a kind of efficient bleacher and bactericide. It is used to bleach various fibers including cotton, linen, mulberry, reed, viscose fiber and so on. Additionally, it can bleach sugar, flour, starch, ointment, wax, oil, and more. Sodium chlorite also serves as a leather depilator, a surface treatment for certain metals, and a water and sewage treatment solution. It can even purify trace amounts of nitric oxide in coke oven gas.

Production

The industrial production includes hydrogen peroxide method and electrolysis method.
For hydrogen peroxide method, we dissolve sodium chlorate in water to obtain the solution containing 250 g/L sodium chlorate, add chlorine dioxide generator and then adjust sulfuric acid into 4mol/L H2SO4. Add the gas mixture containing sulfur dioxide and air mixture and 4mol/L H2S04 into the chlorine dioxide generator to react, pass the chlorine dioxide gas generated through 3 bubbling absorption towers in series and obtain the solution containing 140 ~ 160 g/L NaClO2 after the reaction with 27.5% hydrogen peroxide and 18% ~ 20% liquid caustic soda. The clear liquor after the precipitation is the liquid sodium chlorite product. Control the concentration of sodium chlorite solution between 350g/L and 400g/L by evaporation and concentration and then obtain the finished product of solid sodium chlorite after cooling crystallization, filtration and drying. As follows:
2NaClO3+SO2+H2SO4→2C1O2+2NaHSO4
2C1O2+2NaOH+H2O2→2NaC1O2+2H2O+O2
For electrolysis method, we dissolve sodium chlorate in mixed acid composed by water and sulfuric acid with 260g sodium chlorate in per milliliter, add the mixed acid into chlorine dioxide generator to react with the mixed gas made up of sulfur dioxide and air (containing 8% ~ 10% sulfur dioxide), take 15% chlorine dioxide gas generated into the cathode chamber of electrolytic bath and add brine and distilled the water continuously in the anode chamber to carry out electrolysis to generate the sodium chlorite solution containing about  20% sodium chlorite. We can obtain the finished product of solid sodium chlorite after removing the trace of free chlorine dioxide and spray-drying at 130℃, or by evaporation concentration, cooling crystallization, filtration and drying. As follows:
2NaClO3+H2SO4+SO2→2ClO2+2NaHSO4
C1O2+e→C1O2-
2Cl-+2e→C12↑
Na++ClO2-→NaClO2

Identification Test

The sodium test (IT-28) is positive.
With the addition of dilute hydrochloric acid in the 5% sample liquid, yellow gas should be produced and the liquid becomes yellow-brown.
The litmus red test paper turns blue after soaking up with 5% sample liquid infiltration.

Content Analysis

Weigh accurately 100 mg of the sample and dissolve it in water to make 250ml. Take 20ml of its solution in the iodine flask, add 12ml of 1mol/L of sulfuric acid and 25ml of potassium iodide test solution (TS-192), plug tightly at once, keep it in the dark for 5min and then add 0.5ml of starch test solution (TS-235). Use 0.1mol/L sodium thiosulfate solution to titrate and carry out the blank test at the same time. Per milliliter of 0.1mol/L sodium thiosulfate solution acts as 2.261mg sodium chlorite (NaClO2).

Toxicity

LD50166mg/kg (rats, per os).
Chlorine dioxide can be produced in use and staying in the air containing 45mg/kg chlorine dioxide for several hours can lead to death for a groundhog. It is irritating to respiratory mucous and eyes.

References

https://pubchem.ncbi.nlm.nih.gov/compound/sodium_chlorite#section=Top
https://en.wikipedia.org/wiki/Sodium_chlorite

Chemical Properties

It is a white crystalline powder or flakes that is readily soluble in water. It is slightly hygroscopic.

Uses

Sodium chlorite is used in the in situ generation of chlorine dioxide for stripping of textiles, bleaching, pulp and paper industries. It acts as a disinfectant in water treatment plant and as a preservative in eye drops. It is also used in contact lens cleaning solution and for sanitizing air ducts. It is associated with zinc chloride and used as a component in therapeutic rinses, toothpastes, mouth sprays and gels. It is utilized for the synthesis of 4-oxo-2-alkenoic acids from alkyl furans. Further, it is involved as a reagent in Pinnick oxidation reaction to prepare carboxylic acid from aldehydes.

Uses

Sodium chlorite may be used in the synthesis of chlorine dioxide and as a hydroxylating agent for the hydroxylation of androstenedione (steroid).

Definition

ChEBI: Sodium chlorite is an inorganic sodium salt in which chlorite is the counterion. It has a role as an oxidising agent. It is an inorganic sodium salt and a chlorite salt.

General Description

Sodium chlorite appears as a white crystalline solid. Difficult to burn, but accelerates the burning of organic substances. Forms explosive mixtures with certain combustible materials. May explode under prolonged exposure to heat or fire. Used in water purification, to bleach wood pulp, textile, fats, oils; and for many other uses.

Air & Water Reactions

Soluble in water.

Reactivity Profile

SODIUM CHLORITE SOLUTION is an oxidizing agent. Can react with acids to form spontaneously explosive chlorine dioxide gas (ClO2). Reacts with ammonia to produce ammonium chlorite, which is shock-sensitive. Finely divided metallic or organic substances in dry mixture with chlorites are highly flammable and may be ignited on friction (Lab. Gov. Chemist 1965). A mixture of organic matter and solid sodium chlorite can be extremely sensitive to heat, impact, or friction (Diox Process 1949). Sodium chlorite reacts very violently with organic materials containing divalent sulfur or with free sulfur (may ignite).

Hazard

Flammable, strong oxidizing agent, dan- gerous fire and moderate explosion risk. (Solution) Strong irritant to skin and tissue.

Health Hazard

TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.

Agricultural Uses

Chlorite is a group of greenish clay minerals of variable composition (similar to mica in structure), which crystallizes in the monoclinic system. The term chlorite is derived from 'chloros', the Greek word for green.
Chlorites are composed of complex silicates of aluminum, magnesium and iron in combination with water.
These are often called 2:2 type clays because they are similar to the unit lattice of vermiculite. But strictly speaking, they are 2:1:1 type clays. A layer of chlorite has 2 silicate tetrahedral units, one alumina octahedral unit and one magnesium octahedral sheet. It has a low cation exchange capacity. Chlorites are most commonly found in low-grade metamorphic rocks. They also occur as secondary minerals in igneous rocks as alteration products of pyroxenes, amphiboles and micas.
Chlorites are infrequent in soils and when present, make up a small fraction of clay minerals. Chlorites are primary minerals and form vermiculites and smectites. Chlorites do not swell on wetting.

Safety Profile

Poison by ingestion. An experimental teratogen. Experimental reproductive effects. Questionable carcinogen with experimental carcinogenic data. Mutation data reported. May act as an irritant due to its oxidizing power. A powerful oxidzing agent; ignited by friction, heat, or shock. An explosive sensitive to impact or heating to 200'. Potentially explosive reaction with acids, oils, organic matter, oxahc acid + water, zinc. Violent reaction or iption with carbon (above 60'), ethylene glycol (at loo'), phosphorus (above SO0), sodum dithionate, sulfur-containing materials. Can react vigorously on contact with reducing materials. When heated to decomposition it emits highly toxic fumes of Cland NazO. Used as a bleachmg agent. See also CHLORITES.

Purification Methods

Crystallise the chlorite from hot water and store it in a cool place. It has also been crystallised from MeOH by counter-current extraction with liquid ammonia [Curti & Locchi Anal Chem 29 534 1957]. A major impurity is chloride ion which can be removed by recrystallisation from 0.001M NaOH. [Schmeisser in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 312 1963.]

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View Lastest Price from Sodium chlorite manufacturers

Hebei Dangtong Import and export Co LTD
Product
Sodium chlorite 7758-19-2
Price
US $658.00-585.00/ton
Min. Order
1ton
Purity
99%
Supply Ability
5000ton
Release date
2023-09-15
Hebei Duling International Trade Co. LTD
Product
Sodium chlorite 7758-19-2
Price
US $60.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
100 tons
Release date
2023-02-09
Wuhan wingroup Pharmaceutical Co., Ltd
Product
Sodium chlorite 7758-19-2
Price
US $10.00/KG
Min. Order
1KG
Purity
99.9%
Supply Ability
100MT/Month
Release date
2022-03-17

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  • SODIUM CHLORITE 98%
  • SODIUMCHLORITE,ANHYDROUS,FLAKES
  • ALCIDEALLAY
  • Natriumchlorit8
  • Scentrex(R) DTS 1.05 sachet, Sodium chlorite
  • Scentrex(R) DTS 7.05 sachet, Sodium chlorite
  • Aseptrol(R) WTS 7.05 sachet, Sodium chlorite
  • Scentrex(R) DTS 1.20 sachet, Sodium chlorite
  • Sodium chlorite, tech. nominally 80%
  • sodium chlorite for food
  • Sodium Chlorite, Tech. Nominally
  • Sodium chlorite,80%,pure,unstabilized
  • Natriumchlorit
  • Sodium Chlorite LR
  • TIANFU-CHEM Sodium chlorite ,75% [pure, unstabilized]
  • SODIUM CHLORITE Extra Pure