438081

Phosphoric acid

ACS reagent, ≥85 wt. % in H₂O

• Szinonimák: Orthophosphoric acid
• Lineáris képlet: H₃PO₄
• CAS-szám: 7664-38-2
• Molekulatömeg: 98.00
• Beilstein: 1921286
• EC-szám: 231-633-2
• MDL-szám: MFCD00011340
• UNSPSC kód: 12352106
• PubChem Substance ID: 329756407
• NACRES: NA.21

Tulajdonságok

• grade: ACS reagent
• Minőségi szint: 200
• gőzsűrűség: 3.4 (vs air)
• gőznyomás: 2.2 mmHg ( 20 °C); 5 mmHg ( 25 °C)
• Teszt: ≥85% (with NaOH, titration)
• Forma: liquid
• környezetbarátabb alternatív termék tulajdonságai: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• koncentráció: ≥85 wt. % in H₂O
• technika/technikák: NMR: suitable
• szennyeződések: Reducing substances, passes test; ≤0.001% volatile acids (as CH₃COOH)
• szín: APHA: ≤10
• bp: 158 °C (lit.)
• mp: ~40 °C (lit.)
• sűrűség: 1.685 g/mL at 25 °C (lit.)
• anion nyomok: chloride (Cl^-): ≤3 ppm; nitrate (NO₃^-): ≤5 ppm; sulfate (SO₄^2-): ≤0.003%
• kation nyomok: As: ≤1 ppm; Ca: ≤0.002%; Fe: ≤0.003%; K: ≤0.005%; Mg: ≤0.02%; Mn: ≤0.5 ppm; Na: ≤0.025%; Sb: ≤0.002%; heavy metals: ≤0.001% (by ICP)
• környezetbarátabb alternatív kategória: Enabling,
• SMILES string: OP(O)(O)=O
• InChI: 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
• Nemzetközi kémiai azonosító kulcs: NBIIXXVUZAFLBC-UHFFFAOYSA-N
• Géninformáció: human ... SRC(6714)

Leírás

Általános leírás

Phosphoric acid (H₃PO₄), also known as orthophosphoric acid, is an inorganic acid. It has a wide range of industrial applications such as an intermediate to produce animal feedstock, to prepare stock solutions for workup procedures and to treat the metal surfaces for better adhesion of paint and resin coatings. In the food industry it is used as a preservative, an acidulant and flavor enhancer.

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Alkalmazás

Phosphoric acid may be employed as standard for the determination of phosphorus-31 nuclear magnetic resonance (³¹P NMR) chemical shifts of the common phospholipids. It may be employed in the following studies:

• As external standard for the analysis of lipid composition of human white matter by ³¹P NMR spectroscopy.
• As external standard during the acid-labile phosphorylation of histone H4 by ³¹P NMR spectroscopy.
• As reference standard to investigate the surface species present on silica/alumina-supported sodium phosphates by pre- and postreaction MAS³¹P-NMR and FTIR spectroscopies.
• As catalyst in the vapor-phase Fries rearrangement of phenylacetate at 623K over a series of surface modified and unmodified ZSM-5.
• As an eco-friendly reagent for the removal of protecting groups like tert-butyl carbamates, tert-butyl esters and tert-butyl ethers.

Egyéb megjegyzések

Concentrated phosphoric acid is approx. 85% H₃PO₄ (aqueous).

Biztonsági adatok

• Piktogramok: GHS05,GHS07
• Figyelmeztetés: Danger
• Figyelmeztető mondatok: H290,H302,H314
• Óvintézkedésre vonatkozó mondatok: P234 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Veszélyességi osztályok: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Tárolási osztály kódja: 8A - Combustible corrosive hazardous materials
• WGK: WGK 1
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable