TRISODIUM PHOSPHATE (12 HYDRATE)

PRODUCT IDENTIFICATION
CAS NO. 7601-54-9; 96337-98-3 (Anhydrous)
10101-89-0 (Dodecahydrate) 

TRISODIUM PHOSPHATE

EINECS NO. 231-509-8
FORMULA Na3PO4·12H2O
MOL WT.

380.12
H.S. CODE  

TOXICITY

 Oral rat LD50: 7400 mg/kg
SYNONYMS Trisodium Orthophosphate;
Phosphoric acid, trisodium, 12-hydrate; Sodium Phosphate Tribasic Dodecahydrate; Trisodium phosphate, dodecahydrate; TSP dodecahydrate; Tertiary Sodium phosphate;
SMILES P(=O)([O-])([O-])[O-].O.[Na+].[Na+].[Na+].O.O.O.O.O.O.O.O.O.O.O

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

White Crystal
MELTING POINT

75 C (Decomposes)
BOILING POINT

 
SPECIFIC GRAVITY

1.62
SOLUBILITY IN WATER

Soluble
pH 11.5 - 12.2 (1% sol)
VAPOR DENSITY  
AUTOIGNITION

 
NFPA RATINGS Health: 3; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

  
FLASH POINT  
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & EXTERNAL LINKS

photographic developers; Removing boiler scale, Softening water; detergent mixture; Wet finishing - pH value adjustment; Aluminium work pieces - Polishing, Burnishing; Clarifying sugar, Fermentation - Nutrient; Complementary feeding stuff for livestock breeding - Mineral enrichment

Wikipedia Linking: http://en.wikipedia.org/wiki/Trisodium_phosphate

Material Safety Data Sheet: http://www.inchem.org/documents/icsc/icsc/eics1178.htm

Google Scholar Search: http://scholar.google.com/

Trisodium phosphate poisoning: http://www.nlm.nih.gov/medlineplus/ency/article/002489.htm

TSP is used for washing surfaces prior to painting, especially exterior surfaces. Liquid bleach is often added to TSP if there is mildew on the surfaces. The TSP and bleach act in concert to both kill the mildew and remove its characteristic stains. It may be used on inside surfaces also, but try to mask all surfaces except the one you want to clean. It can damage many metal and painted surfaces, and can stain woods. It is not recommended for use on glass, either, since it will leave a filmy residue.
TSP can also be used as a masonry cleaner. However, if efflorescence or mortar staining are severe, you may need to resort to a more powerful but dangerous product, muriatic acid.
TSP and TSP-bleach solutions may be applied with a sponge or brush, or can be sprayed on. Generally, you will have to apply some elbow-grease if the mildew or other staining is severe. If you are washing the exterior of a house, it may be worthwhile for you to look into the rental of commercial powerwashing equipment. You may be able to do all necessary cleaning from the ground level, sparing you the risk of extra ladderwork. http://www.naturalhandyman.com/

Phosphates Use in Foods: http://www.foodadditives.org/

Latest Trisodium Phosphate Laundry Documents: http://www.vssm.org/

A colourless crystalline compound, Na3PO4, soluble in water and insoluble in ethanol. It is known both as the decahydrate (octagonal; r.d. 2.54) and the dodecahydrate (trigonal; r.d. 1.62) The dodecahydrate loses water at about 76°C and the decahydrate melts at 100°C. Trisodium phosphate may be prepared by boiling sodium carbonate with the stoichiometric amount of phosphoric acid and subsequently adding sodium hydroxide to the disodium salt thus formed. It is useful as an additive for high-pressure boiler feed water (for removal of calcium and magnesium as phosphates), in emulsifiers, as a water-softening agent, and as a component in detergents and cleaning agents. Sodium phosphate labelled with the radioactive isotope 32P is used in the study of the role of phosphate in biological processes and is also used (intravenously) in the treatment of polycythaemia. http://science.jrank.org/
SALES SPECIFICATION

FOOD GRADE (FCC)

APPEARANCE

White Crystal

Na3PO4.12H2O

98.0 - 102.0%

SULPHATE (as SO4)

0.5% max
CHLORIDE (as Cl)

0.3% max

WATER INSOLUBLES

0.1% max

Na2O

16 - 20.5%

HEAVY METAL

10ppm max
ARSENIC

3ppmmmax
LOSS ON IGNITION

45.0 - 57.0%

pH

11.5 - 12.2 (1% sol)

TECH GRADE

APPEARANCE

White Crystal

Na3PO4.12H2O

98.0% min
SULPHATE (as SO4)

0.5% max
CHLORIDE (as Cl)

0.3% max

WATER INSOLUBLES

0.1% max

Na2O

16.0 - 19.0%

TRANSPORTATION
PACKING 25kgs , 50kgs in bag
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XI, Risk Phrases: 36/37/38, Safety Phrases: 26/28