Tri Sodium Phosphate (Dodecahydrate)

Synonyms: Trisodium Phosphate, 12-Hydrate; Phosphoric Acid, Trisodium Salt, Dodecahydrate



Molecular Formula

Na3PO4 .12H2O

Molecular Weight



White Crystalline Powder





98% MIN

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

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Material Safety Data Sheet

Trisodium Phosphate (Dodechydrate)


Section 1: Chemical Product and Company Identification


Chemical Name: Tri Sodium Phosphate (Dodechydrate)


CAS#: 10101-89-0

RTECS: TC9490000

TSCA: TSCA 8(b) inventory: Sodium phosphate tribasic

CI#: Not available.

Synonym: Trisodium Phosphate Anhydrous; Phosphoric

Acid, Trisodium Salt; Trisodium Orthophosphate

Chemical Formula: Na3PO4


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

Trisodium Phosphate (Dodechydrate)




Toxicological Data on Ingredients:  Tri Sodium Phosphate (Dodechydrate): ORAL (LD50): Acute: 4150 mg/kg [Rat [information from other supplier]]. DERMAL (LD50): Acute: >7940 mg/kg [Rabbit [information from other supplier]]. >300 mg/kg [Rabbit [Registry of Toxic Effects of Chemical Substances database]].


Section 3: Hazards Identification


Potential Acute Health Effects:

Hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation. Slightly hazardousin case of skin contact (permeator). Corrosive to eyes and skin. The amount of tissue damage depends on length of contact. Eye contact can result in corneal damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce lung damage, choking, unconsciousness or death.


Potential Chronic Health Effects:





Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung damage.


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 immediately.


Skin Contact:

In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Cover the irritated skin with an emollient. Cold water may be used. Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.


Serious Skin Contact:

Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek medical attention.



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


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. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention if symptoms appear.


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.

Slightly explosive in presence of heat.


Fire Fighting Media and Instructions: Not applicable.


Special Remarks on Fire Hazards: Not available.


Special Remarks on Explosion Hazards: Containers may explode when heated


Section 6: Accidental Release Measures


Small Spill:

Use appropriate tools to put the spilled solid in a convenient waste disposal container. If necessary: Neutralize the residue with a dilute solution of acetic acid. Finish cleaning by spreading water on the contaminated surface and dispose of according to local and regional authority requirements.


Large Spill:

Corrosive solid.

Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Call for assistance on disposal. Neutralize the residue with a dilute solution of acetic acid. Be careful that the product is not present at a concentration level above TLV. Check TLV on the MSDS and with local authorities.


Section 7: Handling and Storage



Keep container dry. Do not ingest. Do not breathe dust. Never add water to this product. Wear suitable protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment. If ingested, seek medical advice immediately and show the container or the label. Avoid contact with skin and eyes. Keep away from incompatibles such as moisture.


Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area. Do not store above 23C (73.4F).


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. Synthetic apron. Gloves (impervious).


Personal Protection in Case of a Large Spill:

Splash goggles. Full suit. Boots. Gloves. Suggested protective clothing might not be sufficient; consult a specialist BEFORE handling this product.


Exposure Limits:

TWA: 15 (mg/m3) from OSHA (PEL) [United States] Inhalation Total.

TWA: 5 (mg/m3) from OSHA (PEL) [United States] Inhalation Respirable.

TWA: 5 STEL: 5 (mg/m3) from AIHA InhalationConsult local authorities for acceptable exposure limits.


Section 9: Physical and Chemical Properties


Physical state and appearance: Solid.


Odor: Odorless.


Taste: Not available.


Molecular Weight: 163.94 g/mole


Color: White.


pH (1% soln/water): 11.9 [Basic.]


Boiling Point: Not available.


Melting Point: 75C (167F)


Critical Temperature: Not available.


Specific Gravity: 1.62 (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 hot water.

Soluble in cold water.


Section 10: Stability and Reactivity Data


Stability: The product is stable.


Instability Temperature: Not available.


Conditions of Instability: Moisture


Incompatibility with various substances: Reactive with moisture.


Corrosivity: Non-corrosive in presence of glass.


Special Remarks on Reactivity: Hygroscopic. Sodium Phosphate Tribasic forms a strong caustic solution similar to soda lye


Special Remarks on Corrosivity: When wet, mild steel and brass may be corroded by sodium phosphate tribasic.


Polymerization: Will not occur.


Section 11: Toxicological Information


Routes of Entry: Absorbed through skin. Inhalation. Ingestion.


Toxicity to Animals:

Acute oral toxicity (LD50): 4150 mg/kg [Rat [information from other supplier]].

Acute dermal toxicity (LD50): >300 mg/kg [Rabbit [Registry of Toxic Effects of Chemical Substances database]].


Chronic Effects on Humans: Not available.


Other Toxic Effects on Humans:

Extremely hazardous in case of skin contact (corrosive), of eye contact (corrosive), of inhalation (lung corrosive).

Hazardous in case of skin contact (irritant), of ingestion, .

Slightly hazardous in case of skin contact (permeator).


Special Remarks on Toxicity to Animals: Not available.


Special Remarks on Chronic Effects on Humans: May affect genetic material (mutagenic)


Special Remarks on other Toxic Effects on Humans:

Acute Potential Health Effects:

Skin: Causes skin irritation with possible burning pain and corrosive damage. It may be absorbed through the skin.

Eyes: Causes eye irritation. It causes immediate and severe pain followed by conjunctival edema and corneal clouding. Later cataract formation may occur. This substance may cause eye burns.

Inhalation: May be harmful if inhaled. Inhalation of dust may Cause respiratory tract and mucous membrane irritation with coughing, sneezing, choking, difficulty breathing, and pulmonary edema.

Ingestion: May be harmful if swallowed. May cause severe gastrointestinal (digestive) tract irritation with severe nausea, vomiting, abdominal discomfort, violent purging, diarrhea, and burning sensation. Ingestion of large amounts may induce hypcalcemia or hypnatremia characterized by tetanus-like spasms, due to the sequestration of calcium ions by the phosphate moiety. It may also cause caustic burns of the mouth oropharnyx, esophagus, or gastrointestinal tract.


Section 12: Ecological Information



Ecotoxicity in water (LC50): 220 mg/l 96 hours [Bluegill sunfish]. 120 mg/l 96 hours [Rainbow Trout]. 177 mg/l 50 hours [Daphnia].


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 products of degradation are as toxic as the original product.


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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