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Sodium phosphoric acid

HCID 61427
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Basic information

CAS
7601-54-9
Standard SMILES
O=P(O)(O)O.[Na+]
InChIKey
AJPJDKMHJJGVTQ-UHFFFAOYSA-N
Molecular formula
H3NaO4P+
Average molar mass
120.985 g/mol
Monoisotopic mass
120.96666485

Names & identifiers

Preferred name
Sodium phosphoric acid
IUPAC
sodium phosphoric acid
English name
Trisodium phosphate
Molecular formula
Na3O4P
Molecular weight
163.940671

Names & synonyms

SCHEMBL29376065AJPJDKMHJJGVTQ-UHFFFAOYSA-NNSC215202SODIUM PHOSPHATETSPNa3PO4tribasicSODIUM PHOSPHATE BUFFERTSPCTSPATHBS1Sodium orthophosphate
Show more names
TRI-SODIUM ORTHOPHOSPHATE

Database identifiers

CAS
7601-54-9
PubChem CID
61427

Properties

Computed structural properties

Topological polar surface area
77.8 Ų
Hydrogen bond donors
3
Hydrogen bond acceptors
4
Rotatable bonds
0
Heavy atoms
6
Formal charge
1
Complexity
49.8

Physicochemical properties

Melting point
1340 °C · 1340°C
Density
2.536 g/cm3 · 2.536 g/cm3(Temp: 17.5 °C)
vapor pressure
0 Pa · 0Pa at 20℃
storage temp.
Inert atmosphere,Room Temperature
solubility
2 O: · H2O: slightly soluble(lit.)
form
Powder
color
White
PH
10.95 · 10.95(1 mM solution);11.71(10 mM solution);12.12(100 mM solution)
Odor
100 % · at 100.00%. odorless
Water Solubility
Soluble in water. Insoluble in ethanol and carbon disulfide.
Sensitive
Hygroscopic
Merck
14 · 14,8662
Dielectric constant
1.6 · 1.6(Ambient)
Major Application
battery precursorscatalystsmaterial synthesis precursor
Cosmetics Ingredients Functions
CHELATINGBUFFERING
InChI
InChI=1S/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3

Safety & regulation

Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.

Safety data

F
34
PPE
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
wgk
1
tsca
TSCA listed
rtecs
TC9490000
ridadr
UN 3262 8/PG 3
hs_code
28352910
Toxicity
LD50 skin in rabbit: > 300mg/kg
risk_code
34-36/37/38
Signal word
Warning
Symbol(GHS)
GHS07
hazard_code
C,Xi
safety_code
26-36/37/39-45-24/25
hazard_class
8
Storage Class
13 - Non Combustible Solids
packing_group
III
target organs
Respiratory system
Hazard statements
H315-H319-H335
Limited Quantities
5.0 kg (11 lbs) (solid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
REACH Registrations
Active
Hazard Classifications
Eye Irrit. 2Skin Irrit. 2STOT SE 3
Precautionary statements
P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazardous Substances Data
7601-54-9(Hazardous Substances Data)

Chemistry & industry

Applications · 5 items

DescriptionTrisodium phosphate (TSP) is an inorganic salt used as industrial detergents, metal treatment and in toilet floor cleaners. TSP is pure cleaning power. Used as a water softener; for the treatment of boiler water; as a paint remover; in photographic developers; for tanning leather; for manufacturing paper; for clarifying sugar. Also, it is a common laboratory reagent. Use to dissolve dirt, grease, and mildew from siding, decks, masonry, boats, campers. To prepare surfaces before painting or staining wash with TSP. Trisodium phosphate is an approved food additive in the U.S., European Union and other countries of the world. It may be added to foods and beverages or smoothies and green drinks. The primary function of trisodium phosphate is acidity regulation. It is commonly present in dry, extruded cereals. Together with other phosphates, it modifies cereal color, aids the cereal's flow through the extruder and provides phosphorus fortification. It is also commonly present in cheese sauces as an emulsifier. Trisodium phosphate is a strong chemical and can cause severe eye damage and can burn unprotected skin. Poisoning occurs if you swallow, breathe in, or spill large amounts of this substance on your skin.

UsesTrisodium Phosphate is an emulsifier and buffer that is strongly alkaline, with a ph of 12. it is moderately soluble in water, with a solubility of 14 g/100 ml at 25°c. it functions as an emulsifier in processed cheese to improve texture. it maintains viscosity and pre- vents phase separation in evaporated milk and is also found in cereals. it is also termed trisodium orthophosphate, sodium phosphate tribasic, and trisodium monophosphate.

UsesTrisodium phosphate (TSP) is a cleaning agent, lubricant, food additive, stain remover and degreaser. It is an alkaline cleaning agent that has been used as a household cleaner for many years, but ecological problems have largely ended that practice, at least in the western world. Substitutes are not as effective, but the raw chemical can be bought in bulk to add to other detergents. It works by disrupting the bacterial cell membrane and causing the contents to leak out, though the exact mechanism is not fully elucidated (Oyarzabal, 2005). Trisodium phosphate solutions are approved for treatment of beef carcasses in the US Code of Federal Regulations (21 CFR 182.1778; FDA 2003). By the end of the 20th century, many products that formerly contained TSP were manufactured with TSP substitutes, which consist mainly of sodium carbonate along with various admixtures of nonionic surfactants and a limited percentage of sodium phosphates. TSP is commonly used after cleaning with mineral spirits in order to remove hydrocarbon residues. TSP may be used with household chlorine bleach in the same solution without hazardous reactions. This mixture is particularly good for removing mildew, but is ineffective at permanently removing mold.

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Compound notes

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On this pageBasic informationNames & identifiersPropertiesSafety & regulationChemistry & industryRelated reactionsCompound notes
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InChIKey
RYFMWSXOAZQYPI-UHFFFAOYSA-K
SMILES
[Na+].[Na+].[Na+].P([O-])([O-])([O-])=O
CAS DataBase Reference
7601 · 7601-54-9(CAS DataBase Reference)
Substances Added to Food (formerly EAFUS)
SODIUM PHOSPHATE, TRIBASIC
FDA 21 CFR
173.31 · 173.310; 178.1010
EWG's Food Scores
1 · 1
FDA UNII
1 TZO3QZ · SX01TZO3QZ
NCI Drug Dictionary
sodium phosphate
ATC code
6 AD17,A06AG01,B05XA09 · A06AD17,A06AG01,B05XA09
EPA Substance Registry System
Trisodium phosphate (7601-54-9)
Pesticides Freedom of Information Act (FOIA)
Trisodium phosphate
Cosmetics Info
Sodium Phosphate
UNSPSC Code
12352302 · 12352302
NACRES
23 · NA.23
Symbol(GHS)
7 · GHS07
Signal word
Warning
Hazard statements
315 · H315-H319-H335
Precautionary statements
261 · P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs
Respiratory system
PPE
3 · Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard Codes
C,Xi
Risk Statements
34 · 34-36/37/38
Safety Statements
26 · 26-36/37/39-45-24/25
RIDADR
3262 · UN 3262 8/PG 3
WGK Germany
1 · 1
RTECS
9490000 · TC9490000
F
34 · 34
TSCA
TSCA listed
HazardClass
8 · 8
PackingGroup
III
HS Code
28352910 · 28352910
Storage Class
13 · 13 - Non Combustible Solids
Hazard Classifications
2 Skin · Eye Irrit. 2Skin Irrit. 2STOT SE 3
Hazardous Substances Data
7601 · 7601-54-9(Hazardous Substances Data)
Toxicity
50 skin · LD50 skin in rabbit: > 300mg/kg
REACH Registrations
Active
Limited Quantities
5 kg · 5.0 kg (11 lbs) (solid)
Excepted Quantities
Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

Usessodium phosphate helps maintain product pH.

General DescriptionSodium phosphate is a colorless to white crystalline powder or granules. It is prepared by neutralization of phosphoric acid under controlled conditions with sodium hydroxide or sodium carbonate .

Preparation methods · 1 item

PreparationTrisodium phosphate may be prepared in two steps, first by adding a little excess of sodium carbonate to phosphoric acid and then boiling the solution to expel carbon dioxide. Sodium hydroxide is then added to the solution: Na2CO3+ H3PO4→Na2HPO4+ CO2+ H2O Na2HPO4+ NaOH →Na3PO4+ H2O Alternatively, trisodium phosphate may be prepared by complete neutralization of phosphoric acid with sodium hydroxide, followed by evaporation and crystallization: H3PO4+ 3NaOH →Na3PO4+ 3H2O

Upstream & downstream products

Upstream raw materials

Industrial soda ashSodium phosphate monobasictwelveSodium fluorosilicatephosphoric acid by wet process

Downstream products

Ethylenebis(nitrilodimethylene)tetraphosphonic acidpotassium ω-hydroperfluroheptylateindustrial wool-scouring powderFerric phosphate tetrahydrateHEXOKINASEtriethylene tetraamine hexamethylene phosphoric acidpolyferric phophat sulfateChorionic GonadotropinPERLITE BEADS GRADE 5

Additional notes

DefinitionChEBI: Trisodium phosphate is a sodium phosphate.