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
orite;TEXTONE;textile;CHLORITE;alcideld;neosiloxd;7758-19-2;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
form 
Powder
color 
White
PH Range
10 - 11
explosive limit
7%
Water Solubility 
39 g/100 mL (17 ºC)
Sensitive 
Hygroscopic
Merck 
14,8600
Stability:
Stable. Incompatible with phosphorus, sulphur, zinc, ammonia, finely powdered metals, strong reducing agents, acids, organic materials.
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

H301Toxic if swalloed

H310Fatal in contact with skin

H314Causes severe skin burns and eye damage

H318Causes serious eye damage

H373May cause damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

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

P221Take any precaution to avoid mixing with combustibles/…

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

P283Wear fire/flame resistant/retardant clothing.

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.

P370+P378In case of fire: Use … for extinction.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
244155
Product name
Sodium chlorite
Purity
technical grade, 80%
Packaging
5g
Price
$47.7
Updated
2021/03/22
Sigma-Aldrich
Product number
244155
Product name
Sodium chlorite
Purity
technical grade, 80%
Packaging
1kg
Price
$130
Updated
2021/03/22
Alfa Aesar
Product number
014265
Product name
Sodium chlorite, tech. nominally 80%
Packaging
10kg
Price
$251
Updated
2021/03/22
Alfa Aesar
Product number
014265
Product name
Sodium chlorite, tech. nominally 80%
Packaging
2kg
Price
$90.6
Updated
2021/03/22
Sigma-Aldrich
Product number
514136
Product name
Chlorine dioxide release mixture
Purity
Scentrex DTS 1.20 sachet
Packaging
25x1g
Price
$126
Updated
2018/11/13
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Sodium chlorite Chemical Properties,Usage,Production

Description

Sodium chlorite (NaClO2) is a white crystalline solid, being able to accelerate the burning of organic substances. It is used in paper manufacture, water purification bleaching wood pulp, textile, fats, and oils, as a disinfectant and in many other fields. In the organic synthesis, it can be frequently used for the oxidation of aldehydes to carboxylic acids. It can also be used to convert Alkyl furans to the 4-oxo-2-alkenoic acids. Moreover, the acidified sodium chlorite (mixture of sodium chlorite with acid such as citric acid) can be used for the sanitation of the hard surfaces as well as rinsing of many foods. In Army, it can be used to combating contaminants such as benigh microbes and food pathogens.

Uses

Sodium chlorite is a kind of efficient bleacher and bactericide. It is used for bleaching of pulp and various fibers such as cotton, linen, mulberry, reed, viscose fiber and so on. It can also bleach sugar, flour, starch, ointment, wax, oil, etc. It is also used for leather depilation, surface treatment of certain metals, water purification, sewage treatment, etc. It can also be used to 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

white flakes

Uses

For improving taste and odor of potable water (as an oxidizing agent); bleaching agent for textiles, paper pulp, edible and inedible oils, shellacs, var- nishes, waxes and straw products; oxidizing agent; reagent.

Definition

ChEBI: An inorganic sodium salt in which chlorite is the counterion.

Definition

A chlorate(III) salt; i.e. a salt of chloric(III) acid (chlorous acid).

General Description

A colorless liquid consisting of sodium chlorite dissolved in water. Corrosive to skin and/or metals.

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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Sodium chlorite Suppliers

Lianyungang Xingang Chemical Co, Ltd.
Tel
0518-88651909-
Fax
0518-88651229
Email
13815506000@139.com
Country
China
ProdList
1
Advantage
58
Shanghai Aladdin Bio-Chem Technology Co.,LTD
Tel
021-20337333-801
Fax
021-50323701
Email
market@aladdin-e.com
Country
China
ProdList
24980
Advantage
65
AOKBIO Inc.
Tel
021-68712331 QQ3286104197
Fax
021 68712331
Email
info@aokbio.com
Country
China
ProdList
323
Advantage
55
Guangdong wengjiang Chemical Reagent Co., Ltd.
Tel
0751-2886750- ;0751-2886750-
Fax
0751-2886750
Email
3005811397@qq.com;3001264886@qq.com
Country
China
ProdList
14232
Advantage
58
Shandong xingshi chemical industry sales co., ltd
Tel
Email
728044249@qq.com
Country
China
ProdList
13
Advantage
58
J & K SCIENTIFIC LTD.
Tel
010-82848833- ;010-82848833-
Fax
86-10-82849933
Email
jkinfo@jkchemical.com;market6@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
21-61259100-
Fax
86-21-61259102
Email
sh@meryer.com
Country
China
ProdList
40264
Advantage
62
Alfa Aesar
Tel
400-610-6006; 021-67582000
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30159
Advantage
84
Beijing dtftchem Technology Co., Ltd.
Tel
010-60275820-
Fax
010-60270825
Email
elainezt@sina.com
Country
China
ProdList
1401
Advantage
62
Energy Chemical
Tel
021-58432009-
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
43494
Advantage
61
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View Lastest Price from Sodium chlorite manufacturers

Wuhan Mulei New Material Technology Co. Ltd
Product
Sodium chlorite 7758-19-2
Price
US $0.00/Kg/Drum
Min. Order
1KG
Purity
99.9%
Supply Ability
100000kg per month
Release date
2021-04-02
Wuhan Monad Medicine Tech Co.,LTD
Product
Sodium chlorite 7758-19-2
Price
US $10.00/KG
Min. Order
1KG
Purity
99.99%
Supply Ability
20 tons/month
Release date
2021-04-16
Wuhan Monad Medicine Tech Co.,LTD
Product
Sodium chlorite 7758-19-2
Price
US $10.00/KG
Min. Order
1KG
Purity
99.99%
Supply Ability
20 tons/month
Release date
2020-12-24

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