Disodium Phosphate (Dodecahydrate)

Synonyms : Disodium hydrogen orthophosphate Dodecahydrate
Sodium hydrogen phosphate Dodecahydrate
Sodium phosphate dibasic Dodecahydrate



Molecular Formula


Molecular Weight



White Crystalline Powder



98% MIN

*Also available Pure, Pharma passing, LR, AR and ACS Grade

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Material Safety Data Sheet

Disodium Phosphate (Dodecahydrate)


Section 1: Chemical Product and Company Identification


Chemical Name: Disodium Phosphate (Dodecahydrate)


CAS#: 10039-32-4

RTECS: TC5725000

TSCA: TSCA 8(b) inventory: No products were found.

CI#: Not available.

Synonym: Sodium monohydrogen phosphate

dodecahydrate; Monosodium Phosphate dodecahyddrate;

Disodium hydrogen orthophosphate dodecahydrate;

Disodium hydrogen phosphate dodecahydrate; Disodium

monohydrogen phosphate dodecahydrate

Chemical Formula: Na2HPO4.12H2O



Contact Information:


Vishnupriya Chemicals Pvt. Ltd.


Office No. 7, Meridian apartments

Lake Hills Road, New MLA Quarters

Basheerbagh, Hyderabad 63,  A.P

Tel :  040 - 23225550

Fax : 040 23223177

Email :

Website :


Section 2: Composition and Information on Ingredients






% by Weight

Disodium Phosphate (Dodecahydrate)




Toxicological Data on Ingredients:  Not applicable.


Section 3: Hazards Identification


Potential Acute Health Effects: Slightly hazardous in case of skin contact (irritant, permeator), of eye contact (irritant), of ingestion, of inhalation.


Potential Chronic Health Effects:





Repeated or prolonged exposure is not known to aggravate medical condition.


Section 4: First Aid Measures


Eye Contact:

Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. Get medical attention if irritation occurs.


Skin Contact:

Wash with soap and water. Cover the irritated skin with an emollient. Get medical attention if irritation develops.

Cold water may be used.


Serious Skin Contact: Not available.



If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.


Serious Inhalation: Not available.



Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. If large quantities of this material are swallowed, call a physician immediately. Loosen tight clothing such as a collar, tie, belt or waistband.


Serious Ingestion: Not available.


Section 5: Fire and Explosion Data


Flammability of the Product: Non-flammable.


Auto-Ignition Temperature: Not applicable.


Flash Points: Not applicable.


Flammable Limits: Not applicable.


Products of Combustion: Not available.


Fire Hazards in Presence of Various Substances: Not applicable.


Explosion Hazards in Presence of Various Substances:

Risks of explosion of the product in presence of mechanical impact: Not available.

Risks of explosion of the product in presence of static discharge: Not available.


Fire Fighting Media and Instructions: Not applicable.


Special Remarks on Fire Hazards: Not available.


Special Remarks on Explosion Hazards: Not available.


Section 6: Accidental Release Measures


Small Spill:

Use appropriate tools to put the spilled solid in a convenient waste disposal container. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements.


Large Spill:

If the product is in its solid form: Use a shovel to put the material into a convenient waste disposal container. If the product is in its liquid form: Absorb with an inert material and put the spilled material in an appropriate waste disposal. Finish cleaning by spreading water on the contaminated surface and allow to evacuate through the sanitary system.


Section 7: Handling and Storage


Precautions: Do not breathe dust. Keep away from incompatibles such as oxidizing agents, acids, alkalis.


Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area.


Section 8: Exposure Controls/Personal Protection


Engineering Controls:

Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to airborne contaminants below the exposure limit.


Personal Protection: Safety glasses. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.  Gloves.


Personal Protection in Case of a Large Spill:

Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product.


Exposure Limits: Not available.


Section 9: Physical and Chemical Properties


Physical state and appearance:

Solid. (Crystals solid. Granular solid. Translucent solid.)


Odor: Odorless.


Taste: Not available.


Molecular Weight: 358.2 g/mole


Color: White. Colorless.


pH (1% soln/water): 9.5 [Basic.]


Boiling Point: Not available.


Melting Point: 34C (93.2F) - 35 deg. C


Critical Temperature: Not available.

Specific Gravity: Density: 1.5 (Water = 1)


Vapor Pressure: Not applicable.


Vapor Density: Not available.


Volatility: Not available.


Odor Threshold: Not available.


Water/Oil Dist. Coeff.: Not available.


Ionicity (in Water): Not available.


Dispersion Properties: See solubility in water.



Easily soluble in cold water, hot water.

Soluble in 3 parts water.

Solubility in water: 87.4 g/100 ml water @ 34 deg. C

Insoluble in alcohol.


Section 10: Stability and Reactivity Data


Stability: The product is stable.


Instability Temperature: Not available.


Conditions of Instability: Incompatible materials


Incompatibility with various substances: Reactive with oxidizing agents, acids, alkalis.


Corrosivity: Non-corrosive in presence of glass.


Special Remarks on Reactivity:

Loses 12 H2O @ 100 deg. C.

Loses 5 moles of water on exposure to air at ordinary temperature.

Incompatible with magnesium, alkaloids, antipyrine, chloral hydrate, lead acetate, pyrogallol, resorcinol, strong mineral acids, strong organic acids.


Special Remarks on Corrosivity: Not available.


Polymerization: Will not occur.


Section 11: Toxicological Information


Routes of Entry: Inhalation. Ingestion.


Toxicity to Animals:

LD50: Not available.

LC50: Not available.


Chronic Effects on Humans: Not available.


Other Toxic Effects on Humans: Slightly hazardous in case of skin contact (irritant, permeator), of ingestion, of inhalation.


Special Remarks on Toxicity to Animals:

Lethal Dose/Conc 50% Kill:

LD50 [Mouse] - Route: Intraperitoneal; Dose: 430 mg/kg


Special Remarks on Chronic Effects on Humans: Not available.


Special Remarks on other Toxic Effects on Humans:

Acute Potential Health Effects:

Skin: Causes mild skin irritation. May cause dermatitis.

Eyes: Causes mild eye irritation.

Ingestion: May cause irritation of the digestive tract and may cause purging. It is slowly aborbed. Expected to be a low ingestion hazard for usual industrial handling. Ingestion of large doses may affect behavior/central nervous system (tetany). However, if a significant amount of phosphate is absorbed, hypophosphatemia will occur. Severe hypophosphatemia may result in hypocalcemia and tetany. Cardiovasular, respiratory, neurologic, and musculoskeletal effects may occur secondary to hypernatremia, hypophosphatemia, and hypcalcemia Inhalation: May cause respiratory tract and mucous membrane irritation. Low hazard for usual industrial handling.

Chronic Potential Health Effects:

Skin: High and repeated exposure may cause dermatitis.


Section 12: Ecological Information


Ecotoxicity: Not available.


BOD5 and COD: Not available.


Products of Biodegradation:

Possibly hazardous short term degradation products are not likely. However, long term degradation products may arise.


Toxicity of the Products of Biodegradation: The product itself and its products of degradation are not toxic.


Special Remarks on the Products of Biodegradation: Not available.


Section 13: Disposal Considerations


Waste Disposal:

Waste must be disposed of in accordance with federal, state and local environmental control regulations.





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