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White Crystal Stable Sodium Chlorite for Bleaching Pulp

Name: Sodium chlorite

More names: Strontium chloride

CAS No.: 7758-19-2

Molecular formula: NaClO2

Molecular weight: 90.44



Physical data

1. Properties: white crystal or crystalline powder. Slightly hygroscopic.

2. Density (g/mL 25ºC): not determined

3. Relative vapor density (g/mL, air=1): not determined

4. Melting point (ºC): 180

5. Boiling point (ºC, normal pressure): 190

6. Boiling point ( ºC, 5.2kPa): not determined

7. Refractive index (n20/D): not determined

8. Flash point (ºC,): not determined

9. Specific rotation (º): not determined

10. Autoignition point or ignition temperature (ºC): Not determined

11. Vapor pressure (kPa, 25ºC): Not determined

12. Saturated vapor pressure (kPa, 60ºC): Not determined

13. Heat of combustion (KJ/mol): Not determined

14. Critical temperature (ºC) : Not determined

15. Critical pressure (KPa): Not determined

16. Log value of oil-water (octanol/water) partition coefficient (25°C): Not determined 17. Explosive upper limit (%, V/V): Not determined 18. Lower explosion limit (%, V/V): Not determined 19. Solubility (mg/mL): Soluble in water and alcohol.

 
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Name: Sodium chlorite

More names: Strontium chloride

CAS No.: 7758-19-2

Molecular formula: NaClO2

Molecular weight: 90.44


Physical data

1. Properties: white crystal or crystalline powder. Slightly hygroscopic.

2. Density (g/mL 25ºC): not determined

3. Relative vapor density (g/mL, air=1): not determined

4. Melting point (ºC): 180

5. Boiling point (ºC, normal pressure): 190

6. Boiling point ( ºC, 5.2kPa): not determined

7. Refractive index (n20/D): not determined

8. Flash point (ºC,): not determined

9. Specific rotation (º): not determined

10. Autoignition point or ignition temperature (ºC): Not determined

11. Vapor pressure (kPa, 25ºC): Not determined

12. Saturated vapor pressure (kPa, 60ºC): Not determined

13. Heat of combustion (KJ/mol): Not determined

14. Critical temperature (ºC) : Not determined

15. Critical pressure (KPa): Not determined

16. Log value of oil-water (octanol/water) partition coefficient (25°C): Not determined 17. Explosive upper limit (%, V/V): Not determined 18. Lower explosion limit (%, V/V): Not determined 19. Solubility (mg/mL): Soluble in water and alcohol.






SODIUM CHLORITE 25%&31% MIN
ITEM 25% LIQUID INDEX 31%LIQUID INDEX STANDARD NO.
SODIUM CHLORITE 25% MIN 31% MIN HG/T3250-2010
SODIUM CHLORATE 0.60% MAX 0.80% MAX HG/T3250-2010
SODIUM HYDROXIDE 0.40% MAX 0.40% MAX HG/T3250-2010
SODIUM CARBONATE 0.3% MAX 0.4% MAX HG/T3250-2010
SODIUM CHLORIDE 1.5% MAX 2% MAX HG/T3250-2010
SODIUM SULFATE 0.1% MAX 0.1% MAX HG/T3250-2010
SODIUM NITRATE 0.1% MAX 0.1% MAX HG/T3250-2010
ARSENIC 0.0003% MAX 0.0003% MAX HG/T3250-2010
MERCURY 0.00001% MAX 0.00001% MAX HG/T3250-2010
LEAD 0.0001% MAX 0.0001% MAX HG/T3250-2010


SODIUM CHLORITE 80%&82% &90%MIN
ITEM 80% POWDER INDEX 82%POWDER INDEX 90%POWDER INDEX STANDARD NO.
SODIUM CHLORITE 80% MIN 82% MIN 90% MIN HG/T3250-2010
SODIUM CHLORATE 0.60% MAX 1% MAX 0.80% MAX HG/T3250-2010
SODIUM HYDROXIDE 0.40% MAX 0.50% MAX 0.40% MAX HG/T3250-2010
SODIUM CARBONATE 0.3% MAX 0.6% MAX 0.5% MAX HG/T3250-2010
SODIUM CHLORIDE 15.6% MAX 14.7% MAX 9% MAX HG/T3250-2010
SODIUM SULFATE 0.8% MAX 0.7% MAX 0.6% MAX HG/T3250-2010
SODIUM NITRATE 0.1% MAX 0.1% MAX 0.1% MAX HG/T3250-2010
ARSENIC 0.0003% MAX 0.0003% MAX 0.0003% MAX HG/T3250-2010
MERCURY 0.00001% MAX 0.00001% MAX 0.00001% MAX HG/T3250-2010
LEAD 0.0001% MAX 0.0001% MAX 0.0001% MAX HG/T3250-2010

Storage method

1. It should be stored in a cool, ventilated and dry warehouse, but not in a wooden warehouse.

2. Do not store and mix with flammables, acids and reducing agents. Pay attention to moisture. Keep away from heat and sources of ignition.

3. Protect from rain and sun during transportation. Handle with care when loading and unloading to prevent violent collisions. In case of fire, water, sand, and various fire extinguishers can be used to extinguish the fire.


Main purpose

1. Used for bleaching pulp, fiber, flour, starch, oil, etc., drinking water purification and sewage treatment, leather depilation and preparation of chlorine dioxide aqueous solution, etc. For high-efficiency bleach and oxidizer. It is mainly used as pulp, paper and various fibers, such as cotton, hemp and reed. Bleaching of viscose fibers, etc., as well as bleaching of sugar, flour, starch, grease and wax. It is also used for leather depilation, surface treatment of some metals, drinking water purification and sewage treatment, etc. It can be used as a discharge agent for indanthrene dyeing. oxidizing agent. fungicide. purified water. Fabric bleach.

2. Used as bleaching agent in food industry. It is mainly used for candied products. The aqueous solution of sodium chlorite has a stable bleaching ability under acidic conditions, and can be bleached after adjusting the pH value to 3-5 by adding citric acid. Corrosion-resistant containers are required for bleaching, and metal containers are not allowed. Japanese regulations limit it to cherries, butterbur, grapes and peaches. FDA (§ 186.1750, 2000) stipulates that it is limited to paper in contact with food, and the limit is 125-250mg/kg.

3. Efficient bleach and oxidizer. It is mainly used for bleaching pulp, paper and various fibers, such as cotton, hemp, reed, viscose fiber, etc. It can also bleach white sugar, flour, starch, grease and wax. It is also used for leather depilation, surface treatment of some metals, drinking water purification and sewage treatment, etc. It can be used as a discharge agent for indanthrene dyeing.

4. Used for drinking water purification, no residual chlorine odor treatment of sewage, has the functions of sterilization, phenol removal and deodorization. This product is also a high-efficiency bleaching agent, which is used to bleach fabrics, fibers, and pulp, and has the characteristics of little damage to fibers.


Security information

Risk term

R25: Toxic if swallowed. Toxic if swallowed.

R26: Very toxic by inhalation. Very toxic by inhalation.

R32: Contact with acid liberates very toxic gas. Contact with acid liberates very toxic gas.

R34: Causes burns.

R9: Explosive when mixed with combustible material. Explosive when mixed with combustible material.


Security terms

S17:Keep away from combustible material. Keep away from combustible material.

S36/37/39: Wear suitable protective clothing, gloves and eye/face protection. Wear suitable protective clothing, gloves and goggles or mask.

S38: In case of insufficient ventilation, wear suitable respiratory equipment.

S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

S50A:;system number

CAS number: 7758-19-2

MDL number: MFCD00003478

EINECS Number: 231-836-6

RTECS No.: VZ4800000

PubChem number: 24886186


Toxicological data

Rat oral LD50: 166mg/kg. Groundhogs can die in the air containing 45mg/kg chlorine dioxide for several hours. Irritant to mucous membranes of respiratory organs and eyes.

Stable in nature

1. Easily soluble in water (34% at 5°C; 46% at 30°C). The anhydrous substance will not decompose when heated to 350°C, and the general product will decompose when heated to 180-200°C due to the moisture content. Alkaline aqueous solution is stable to light, while acidic aqueous solution will decompose explosively and release chlorine dioxide under the influence of light. Strong oxidizing agent, its oxidizing ability is 4-5 times that of bleaching powder and 2-3 times that of bleaching powder. Contact with combustibles and mixing with organic matter can cause an explosion.

2. The dust of this product can irritate the mucous membranes of respiratory organs, eyes and skin. Inhaling the dust of this product will cause poisoning due to accumulation in the body, and symptoms such as nausea, vomiting, diarrhea, dyspnea, and kidney damage will occur.


Security Information

Packing Group: II

Hazard Class: 5.1

Customs code: 2828900000

Dangerous goods transportation code: UN28134.3/PG3

WGK Germany: 2

Hazard category code: R25;R26;R32;R34;R9

Safety instructions: S17-S26-S36/37/39-S45-S50A-S38-S36

RTECS number: VZ4800000

Dangerous goods sign: O:Oxidizingagent;T+:Verytoxic;


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SODIUM CHLORITE 25%&31% MIN
ITEM25% LIQUID INDEX31%LIQUID INDEXSTANDARD NO.
SODIUM CHLORITE25% MIN31% MINHG/T3250-2010
SODIUM CHLORATE0.60% MAX0.80% MAXHG/T3250-2010
SODIUM HYDROXIDE0.40% MAX0.40% MAXHG/T3250-2010
SODIUM CARBONATE0.3% MAX0.4% MAXHG/T3250-2010
SODIUM CHLORIDE1.5% MAX2% MAXHG/T3250-2010
SODIUM SULFATE0.1% MAX0.1% MAXHG/T3250-2010
SODIUM NITRATE0.1% MAX0.1% MAXHG/T3250-2010
ARSENIC0.0003% MAX0.0003% MAXHG/T3250-2010
MERCURY0.00001% MAX0.00001% MAXHG/T3250-2010
LEAD0.0001% MAX0.0001% MAXHG/T3250-2010


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