Potassium phosphate, tribasic, monohydrate

HCID 22031701CAS 115281-28-2

Substructure search Find similar structures

Basic information

Standard SMILES: O.O=P([O-])([O-])[O-].[K+].[K+].[K+]
InChIKey: RMNIZOOYFMNEJJ-UHFFFAOYSA-K
Molecular formula: H2K3O5P
Average molar mass: 230.28 g/mol
Monoisotopic mass: 229.85510483

Names & identifiers

Preferred name: Potassium phosphate, tribasic, monohydrate
IUPAC: tripotassium;phosphate;hydrate
English name: TRI-POTASSIUM PHOSPHATE MONOHYDRATE
Molecular formula: H6KO5P
Molecular weight: 156.12

Names & synonyms

27176-10-9Potassium phosphate tribasic monohydratetert-Potassium phosphate monohydrateTripotassium phosphate, monohydratePotassium phosphate, tribasic, monohydrateUNII-4927M96TFV4927M96TFVDTXSID40181645RefChem:175581DTXCID80104136608-057-9Tri-Potassium Phosphate Monohydrate

Show more names

ripotassium,phosphate,hydratetripotassium,phosphate,hydratePotassium phosphate hydrate (3:1:1)tri-PotassiumPhosphate1,5-hydratePRSTRI-POTASSIUM PHOSPHATE-1-HYDRATE EXTRAPUREPotassium phosphate tribasic monohydrate,90%PotassiuM phosphate tribasic Monohydrate >=95%Phosphoric acid, tripotassium salt, monohydratePotassium phosphate, tribasic monohydrate, c.p.

potassium phosphate hydratetripotassium;phosphate;hydrateMFCD00150410potassium phosphate monohydratePhosphoric acid, tripotassium salt, hydrate (9CI)Potassium phosphate xhydrateH2K3O5PTripotassium Phosphate xHydrate

Database identifiers

CAS: 115281-28-2、27176-10-9
PubChem CID: 22031701
DTXSID: DTXSID40181645
UNII: 4927M96TFV
EC Number: 608-057-9、878-930-9

Properties

Computed structural properties

Topological polar surface area: 87.3 Å²
Hydrogen bond donors: 1
Hydrogen bond acceptors: 5
Rotatable bonds: 0
Heavy atoms: 9
Formal charge: 0
Complexity: 36.8

Physicochemical properties

Melting point: 1340 °C · 1340°C
Density: 2 · 2,564 g/cm3
solubility: water: soluble
form: Powder
color: White
Water Solubility: Soluble in water. Insoluble in alcohol.
InChI: 1S/3K.H3O4P.H2O/c;;;1-5(2,3)4;/h;;;(H3,1,2,3,4);1H2/q3*+1;;/p-3
InChIKey: RMNIZOOYFMNEJJ-UHFFFAOYSA-K
SMILES: O.[K+].[K+].[K+].[O-]P([O-])([O-])=O
FDA UNII: 4927 M96TFV · 4927M96TFV
UNSPSC Code: 12352302 · 12352302
NACRES: 22 · NA.22
Symbol(GHS): 5 · GHS05,GHS07
Signal word: Danger
Hazard statements: 318 · H318-H335
Precautionary statements: 261 · P261-P271-P280-P304+P340+P312-P305+P351+P338-P403+P233
target organs: Respiratory system
PPE: 95 · dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes: Xi
Risk Statements: 41 · 41-38-34
Safety Statements: 26 · 26-39-62-46-36
RIDADR: 3262 · 3262
WGK Germany: 2 · 2
RTECS: 8450000 · TC8450000
F: 3 · 3-9
TSCA: Yes
HS Code: 28352400 · 28352400
Storage Class: 11 · 11 - Combustible Solids
Hazard Classifications: 1 STOT · Eye Dam. 1STOT SE 3

Safety & regulation

GHS classification

GHS Classification · 6 items

Danger

H315 (95.5%): Causes skin irritation [Warning Skin corrosion/irritation]

P264, P264+P265, P280, P302+P352, P305+P354+P338, P317, P321, P332+P317, and P362+P364 (click each P-code to see the statement)

Aggregated GHS information provided per 44 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Danger

H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]

Hazard information

Hazard Classes and Categories · 2 items

Skin Irrit. 2 (95.5%)

Skin Corr. 1B (100%)

Safety data

F: 3-9
PPE: dust mask type N95 (US), Eyeshields, Gloves
wgk: 2
tsca: Yes
rtecs: TC8450000
ridadr: 3262
hs_code: 28352400
risk_code: 41-38-34
Signal word: Danger
Symbol(GHS): GHS05,GHS07
hazard_code: Xi
safety_code: 26-39-62-46-36
Storage Class: 11 - Combustible Solids
target organs: Respiratory system
Hazard statements: H318-H335
Hazard Classifications: Eye Dam. 1STOT SE 3
Precautionary statements: P261-P271-P280-P304+P340+P312-P305+P351+P338-P403+P233

Chemistry & industry

Applications · 1 item

UsesPotassium phosphate monohydrate acts as a reagent and buffer used in molecular biology, biochemistry, and chromatography. It is utilized to study the effects of freezing and thawing of proteins sensitive to conformational changes. It is also used in the extraction of keratohyalin protein from bovine tissue. Further, it is used as a food additive, emulsifier, foaming agent and fertilizer.