disodium [(oxidodioxochromio)oxy]chromiumoylolate dihydrate

• ChemBase ID: 105863
• Molecular Formular: Cr2H4Na2O9
• Molecular Mass: 297.9981
• Monoisotopic Mass: 297.84608527
• SMILES: O.O.[Na+].[Na+].[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-]
• Canonical SMILES: [O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].O.O.[Na+].[Na+]
• InChI: InChI=1S/2Cr.2Na.2H2O.7O/h;;;;2*1H2;;;;;;;/q;;2*+1;;;;;;;;2*-1
• InChIKey: JYDRNIYTFCBIFC-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: disodium [(oxidodioxochromio)oxy]chromiumoylolate dihydrate
• IUPAC Traditional name: dipotassium chromate dihydrate; disodium chromate dihydrate
• Synonyms: Sodium dichromate dihydrate, ACS; Sodium dichromate dihydrate, Reagent Grade; Sodium bichromate; SODIUM DICHROMATE DIHYDRATE ACS REAGENT GRADE; Sodium dichromate dihydrate; 重铬酸钠二水合物, ACS; 重铬酸钠二水合物,试剂级; 红矾钠; 重铬酸钠 二水合物

Database IDs

• CAS Number: 7789-12-0
• EC Number: 231-157-5; 234-190-3
• MDL Number: MFCD00149166
• Merck Index: 148609
• PubChem SID: 24847501; 24844879; 24864716; 162092675; 24871864
• PubChem CID: 108005

CALCULATED PROPERTIES

• Acid pKa: -2.30103
• H Acceptors: 6
• H Donor: 0
• LogD (pH = 5.5): -8.234395
• LogD (pH = 7.4): -8.2344
• Log P: -3.7068
• Molar Refractivity: 10.0076 cm^3
• Polarizability: 11.546313 Å^3
• Polar Surface Area: 123.63 Å^2
• Rotatable Bonds: 2
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: Soluble in water
• Apperance: crystalline; Crystalline
• Melting Point: 100°C -2H{2}O; 1900 °C (3452 °F); 91 °C(lit.)
• Boiling Point: 2642 °C (4788 °F)
• Density: 2.348; 7.2 (water = 1)
• Vapor Pressure: Practically zero at room temperature, 1 mm Hg at 1616 °C

Safety Information

• Storage Condition: Room Temperature (15-30°C)
• Storage Warning: Hygroscopic
• RTECS: HX7750000
• European Hazard Symbols: Nature polluting (N); Oxidising (O); Highly toxic (T+)
• UN Number: 3077; 3086; UN3087
• German water hazard class: 3
• Hazard Class: 5.1; 6.1; 9
• Packing Group: 1; II; III
• Australian Hazchem: 2X
• Risk Statements: 45-46-60-61-8-21-25-26-34-42/43-48/23-50/53; R:21-25-26-37/38-41-43-46-49-50/53
• Safety Statements: 53-45-60-61; S:45-53-60-61
• EU Classification: M7
• EU Hazard Identification Number: 13
• Emergency Response Guidebook(ERG) Number: 171
• TSCA Listed: 是
• GHS Pictograms: GHS03; GHS05; GHS06; GHS08; GHS09
• GHS Signal Word: Danger
• GHS Hazard statements: H272-H301-H312-H314-H317-H330-H334-H340-H350-H360FD-H372-H410; H272-H301-H330-H312-H317-H334-H340-H350-H360-H372-H314-H400-H410
• GHS Precautionary statements: P201-P220-P260-P273-P280-P284; P221-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P320-P330-P405-P501A
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges; Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
• RID/ADR: UN 3086 6.1/PG 1

Product Information

• Purity: ≥99%; ≥99.0% (RT); ≥99.5%; ≥99.5% (RT); 99%; 99.5-100.5%; 99.5-100.5% (ACS specification); 99.995% trace metals basis
• Grade: ACS; ACS reagent; puriss. p.a.; purum; REAGENT; ReagentPlus®
• Impurities: ≤0.005% Insoluble matter and ammonium hydroxide precipitate; ≤0.005% insolubles; ≤0.005% NH4OH ppt.
• Cation Traces: Al: ≤0.002%; Al: ≤20 mg/kg; Ca: ≤0.003%; Ca: ≤20 mg/kg; Cu: ≤10 mg/kg; Fe: ≤20 mg/kg; K: ≤200 mg/kg; Pb: ≤20 mg/kg
• Antion Traces: chloride (Cl-): ≤0.005%; chloride (Cl-): ≤10 mg/kg; chloride (Cl-): ≤500 mg/kg; sulfate (SO42-): ≤0.01%; sulfate (SO42-): ≤50 mg/kg; sulfate (SO42-): ≤5000 mg/kg
• Linear Formula: Na2Cr2O7 · 2H2O

DETAILS

MP Biomedicals - 02194865

Dihydrate
ACS Reagent Grade
Purity: 99.5-100.5%
NOT FOR EXPORT

Sigma Aldrich - 483060

Packaging
10 g in poly bottle

Sigma Aldrich - 398063

Packaging
100, 500 g in poly bottle
2.5 kg in poly bottle

Sigma Aldrich - 239291

Packaging
500 g in poly bottle
Legal Information
ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC