Phosphoric acid

• Catalog No.: 79606
• CAS Number: 7664-38-2
• M. F.: H3O4P
• M. W.: 97.995181
• Purity: 85-90% (T)

SYNONYMS

• Title: 磷酸
• IUPAC name: phosphoric acid
• IUPAC Traditional name: phosphoric acid
• Synonyms: Orthophosphoric acid; 正磷酸

DATABASE IDS

• PubChem SID: 24887479
• Beilstein Number: 1921286
• MDL Number: MFCD00011340
• CAS Number: 7664-38-2

PROPERTIES

• GHS Precautionary statements: P280-P305 + P351 + P338-P310
• RID/ADR: UN 1805 8/PG 3
• Risk Statements: 34
• Safety Statements: 26-45
• Hazard Class: 8
• UN Number: 1805
• Packing Group: 3
• German water hazard class: 1
• GHS Signal Word: Danger
• GHS Hazard statements: H314
• European Hazard Symbols: Corrosive (C)
• Personal Protective Equipment: Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
• Grade: for HPLC
• λ: neat
• Linear Formula: H3PO4
• Purity: 85-90% (T)
• Purity: 85-90%
• Suitability: corresponds to standard for RP gradient test
• Suitability: in accordance for filter test (1:10 diluted)
• Absorption Wavelength: λ: 210 nm Amax: 0.07
• Absorption Wavelength: λ: 220 nm Amax: 0.05
• Absorption Wavelength: λ: 230 nm Amax: 0.04
• Absorption Wavelength: λ: 250 nm Amax: 0.04
• Absorption Wavelength: λ: 500 nm Amax: 0.02
• Boiling Point: 158 °C(lit.)
• Density: 1.685 g/mL at 25 °C(lit.)
• Melting Point: ~40 °C(lit.)
• Vapor Density: 3.4 (vs air)
• Vapor Pressure: 2.2 mmHg ( 20 °C)
• Vapor Pressure: 5 mmHg ( 25 °C)

DETAILS

Description (English)

Caution
product may become solid; becomes liquid on heating to 50°C
Other Notes
Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).

Description (简体中文)

Caution
本品可能形成固态；加热至 50°C 时变为液态
Other Notes
浓磷酸大约为 85% H3PO4(水溶液)。