magnesium(2+) ion heptahydrate sulfate

• ChemBase ID: 153544
• Molecular Formular: H14MgO11S
• Molecular Mass: 246.47456
• Monoisotopic Mass: 246.01072397
• SMILES: O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[Mg+2]
• Canonical SMILES: [O-]S(=O)(=O)[O-].O.O.O.O.O.O.O.[Mg+2]
• InChI: InChI=1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2
• InChIKey: WRUGWIBCXHJTDG-UHFFFAOYSA-L

NAMES AND DATABASE IDS

Names

• IUPAC name: magnesium(2+) ion heptahydrate sulfate
• IUPAC Traditional name: magnesium(2+) ion heptahydrate sulfate
• Synonyms: Magnesii sulfas; Magnesium sulfate hydrate, Puratronic®; Epsom salts; Magnesium sulfate heptahydrate; Epsom salt; Magnesium sulfate heptahydrate, ACS; 硫酸镁; 硫酸镁水合物, Puratronic®; 泻盐; 硫酸镁 七水合物; 七水硫酸镁, ACS

Database IDs

• CAS Number: 22189-08-8; 10034-99-8
• EC Number: 231-298-2
• MDL Number: MFCD00149787; MFCD00149785
• Merck Index: 145691
• PubChem SID: 24853801; 24882420; 24896702; 24896765; 24897188; 24897182; 162247683; 24882416; 24882422; 24848013; 24897057
• PubChem CID: 24843

CALCULATED PROPERTIES

• Acid pKa: -3.034349
• H Acceptors: 4
• H Donor: 0
• LogD (pH = 5.5): -5.569452
• LogD (pH = 7.4): -5.594027
• Log P: -0.841552
• Molar Refractivity: 11.5274 cm^3
• Polarizability: 6.037845 Å^3
• Polar Surface Area: 80.26 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: H2O: soluble1 M at 20 °C, clear, colorless; H2O: soluble1 M, clear, colorless; Soluble in water. Slightly soluble in alcohol, glycerol
• Apperance: Crystalline; Crystalline Aggregates
• Density: 1.68
• Vapor Pressure: <0.1 mmHg ( 20 °C)
• Vapor Density: <0.01 (vs air)
• Absorption Wavelength: λ: 260 nm Amax: 0.010; λ: 280 nm Amax: 0.010
• pH: 5.0-8.0 (25 °C, 1 M in H2O); 5.0-8.0 (25 °C, 50 mg/mL in H2O); 5.0-8.2 (25 °C, 5%); 5.0-8.2 (25 °C, 50 mg/mL in H2O); 5.0-9.2 (25 °C, 5%)

Safety Information

• RTECS: OM4508000
• German water hazard class: 1
• TSCA Listed: 是
• Personal Protective Equipment: Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter

Product Information

• Purity: ≥98%; ≥99.0%; ≥99.0% (KT); ≥99.0% (T); ≥99.5%; ≥99.5% (KT); 98.0-102.0%; 98.0-102.0% (ACS specification); 99.5-100.5% (calc. to the dried substance); 99.997% (metals basis)
• Grade: ACS reagent; for molecular biology; JIS special grade; Ph Eur; puriss. p.a.; purum p.a.; ReagentPlus®; SAJ first grade
• Suitability: complies for appearance of solution; meets USP testing specifications; plant cell culture tested; suitable for plant cell culture
• Impurities: ≤0.0005% Phosphorus (P); ≤0.001% heavy metals (as Pb); ≤0.002% total nitrogen (N); ≤0.004% free alkali (as MgO); ≤0.005% Insoluble matter; ≤0.005% insoluble matter; ≤0.005% insolubles; ≤0.01% free acid (as H2SO4); acidity or alkalinity, in accordance; insoluble matter, passes filter test; organic volatile impurities, complies (GC); residual solvents, complies
• Cation Traces: Al: ≤0.0005%; Al: ≤5 mg/kg; As: ≤0.1 mg/kg; As: ≤2 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤0.01%; Ca: ≤0.02%; Ca: ≤10 mg/kg; Ca: ≤200 mg/kg; Cd: ≤5 mg/kg; Cd: ≤50 mg/kg; Co: ≤5 mg/kg; Co: ≤50 mg/kg; Cr: ≤5 mg/kg; Cu: ≤0.0005%; Cu: ≤5 mg/kg; Cu: ≤50 mg/kg; Fe: ≤0.0005%; Fe: ≤1 mg/kg; Fe: ≤20 mg/kg; Fe: ≤5 ppm; Fe: ≤50 mg/kg; heavy metals (as Pb): ≤5 ppm; K: ≤0.005%; K: ≤10 mg/kg; K: ≤200 mg/kg; K: ≤50 ppm; Li: ≤5 mg/kg; Mn: ≤0.0005%; Mn: ≤5 mg/kg; Mn: ≤5 ppm; Mo: ≤5 mg/kg; Na: ≤0.005%; Na: ≤10 mg/kg; Na: ≤100 mg/kg; Na: ≤50 ppm; NH4+: ≤0.002%; NH4+: ≤20 mg/kg; Ni: ≤5 mg/kg; Ni: ≤50 mg/kg; Pb: ≤0.0005%; Pb: ≤4 mg/kg; Pb: ≤5 mg/kg; Pb: ≤50 mg/kg; Se: ≤30 mg/kg; Sr: ≤0.005%; Sr: ≤5 mg/kg; Zn: ≤0.0005%; Zn: ≤5 mg/kg; Zn: ≤50 mg/kg
• Antion Traces: chloride (Cl-): ≤100 mg/kg; chloride (Cl-): ≤5 mg/kg; chloride (Cl-): ≤5 ppm; nitrate (NO3-): ≤0.002%; nitrate (NO3-): ≤20 mg/kg
• Foreign Activity: DNase, RNase and protease, none detected
• Loss on Drying: 48-52% loss on drying, 450 °C
• Quality: meets analytical specification of Ph. Eur., BP,USP, FCC
• λ: 1 M in H2O
• Product Line: BioReagent; BioUltra; BioXtra
• Linear Formula: MgSO4 · 7H2O

DETAILS

Sigma Aldrich - 63138

Other Notes
Component of Earle′s balanced salt solution1; Component of Hanks′ balanced salt solution2; Component of plant cell-culture media and of culture media for microorganisms.; Purification of CAP, catabolite gene activator3; In the preparation of spheroplasts from E. coli K384

Sigma Aldrich - 230391

Packaging
1, 2.5 kg in poly bottle
5 kg in poly drum
5 kg packaged in open-head poly drums; 25 g, 500 g, 1 kg, 2.5 kg packaged in poly bottles
12 kg in fiber drum
25, 500 g in poly bottle

Sigma Aldrich - M1880

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