438081

Acide phosphorique

ACS reagent, ≥85 wt. % in H₂O

• Synonyme(s) : Acide orthophosphorique
• Formule linéaire : H₃PO₄
• Numéro CAS: 7664-38-2
• Poids moléculaire : 98.00
• Numéro Beilstein : 1921286
• Numéro CE : 231-633-2
• Numéro MDL: MFCD00011340
• Code UNSPSC : 12352106
• ID de substance PubChem : 329756407
• Nomenclature NACRES : NA.21

Propriétés

• Qualité: ACS reagent
• Niveau de qualité: 200
• Densité de vapeur: 3.4 (vs air)
• Pression de vapeur: 2.2 mmHg ( 20 °C); 5 mmHg ( 25 °C)
• Pureté: ≥85% (with NaOH, titration)
• Forme: liquid
• Caractéristiques du produit alternatif plus écologique: Design for Energy Efficiency; Learn more about the Principles of Green Chemistry.
• sustainability: Greener Alternative Product
• Concentration: ≥85 wt. % in H₂O
• Technique(s): NMR: suitable
• Impuretés: Reducing substances, passes test; ≤0.001% volatile acids (as CH₃COOH)
• Couleur: APHA: ≤10
• Point d'ébullition: 158 °C (lit.)
• Pf: ~40 °C (lit.)
• Densité: 1.685 g/mL at 25 °C (lit.)
• Traces d'anions: chloride (Cl^-): ≤3 ppm; nitrate (NO₃^-): ≤5 ppm; sulfate (SO₄^2-): ≤0.003%
• Traces de cations: 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)
• Autre catégorie plus écologique: Enabling,
• Chaîne SMILES: OP(O)(O)=O
• InChI: 1S/H3O4P/c1-5(2,3)4/h(H3,1,2,3,4)
• Clé InChI: NBIIXXVUZAFLBC-UHFFFAOYSA-N
• Informations sur le gène: human ... SRC(6714)

Description

Description générale

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.

Application

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.

Autres remarques

L′acide phosphorique concentré est composé de H₃PO₄ à environ 85 % (aqueux).

Informations sur la sécurité

• Pictogrammes: GHS05,GHS07
• Mention d'avertissement: Danger
• Mentions de danger: H290,H302,H314
• Conseils de prudence: P234 - P270 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338
• Classification des risques: Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Code de la classe de stockage: 8A - Combustible corrosive hazardous materials
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable