selenic acid

• ChemBase ID: 111292
• Molecular Formular: H2O4Se
• Molecular Mass: 144.97348
• Monoisotopic Mass: 145.91182954
• SMILES: O[Se](=O)(=O)O
• Canonical SMILES: O[Se](=O)(=O)O
• InChI: InChI=1S/H2O4Se/c1-5(2,3)4/h(H2,1,2,3,4)
• InChIKey: QYHFIVBSNOWOCQ-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: selenic acid
• IUPAC Traditional name: selenate; selenic acid
• Synonyms: Selenic acid solution; SELENIC ACID, 40% SOLUTION; Selenic acid; Selenic acid; Selenic acid; 硒酸 溶液; 硒酸

Database IDs

• CAS Number: 7783-08-6
• EC Number: 231-957-4; 231-979-4
• MDL Number: MFCD00012191
• Merck Index: 148429
• PubChem SID: 162097155; 24871762
• PubChem CID: 1089
• CHEBI ID: 18170
• Chemspider ID: 1058
• KEGG ID: C05697
• Wikipedia Title: Selenic_acid

CALCULATED PROPERTIES

• Acid pKa: -3.80103
• H Acceptors: 5
• H Donor: 2
• LogD (pH = 5.5): -6.139928
• LogD (pH = 7.4): -6.1553006
• Log P: -1.6279
• Molar Refractivity: 21.1299 cm^3
• Polarizability: 4.6176233 Å^3
• Polar Surface Area: 74.6 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: 130 g/100 mL (30 °C) in water
• Apperance: Colorless deliquescent crystals; Liquid
• Melting Point: 58 °C (331 K)
• Boiling Point: 260 °C (533 K) (decomposes)
• Density: 1.407 g/mL at 25 °C; 1.41; 2.95 g/cm^3, solid
• Refractive Index: 1.5174 (D-line, 20 °C)
• pKa: similar to H₂SO₄

Safety Information

• RTECS: VS6575000
• European Hazard Symbols: Nature polluting (N); Toxic (T)
• UN Number: 3264; UN2922
• German water hazard class: 2
• Hazard Class: 8
• Packing Group: 1; II
• Risk Statements: 23/25-33-34-50/53; 23/25-33-50/53; R:23/25-33
• Safety Statements: 20/21-26-28-36/37/39-45-57-60; 20/21-28-45-60-61; 45-61; S:28-45-20/21
• TSCA Listed: 是
• GHS Pictograms: GHS06; GHS08; GHS09
• GHS Signal Word: Danger
• Main Hazard: Corrosive, highly toxic
• NFPA704:
  

  0

  3

  2
• GHS Hazard statements: H301-H331-H373-H400-H410; H301-H331-H373-H410
• GHS Precautionary statements: P260-P261-P301+P310-P321-P405-P501A; P261-P273-P301 + P310-P311-P501
• RID/ADR: UN 3264 8/PG 1

Product Information

• Purity: 40% aq. soln.; 99.95% trace metals basis
• Concentration: 40 wt. % in H2O
• Linear Formula: H2SeO4

DETAILS

MP Biomedicals - 05218542

MP Biomedicals Rare Chemical collection

Sigma Aldrich - 481513

Packaging
25, 100 mL in glass bottle