1.00732

Sulfuric acid

95-97%, for analysis (max. 0.005 ppm Hg) EMSURE^® ACS,ISO,Reag. Ph Eur

• 別名: Sulfuric acid
• 化学式: H₂SO₄
• CAS番号: 7664-93-9
• 分子量: 98.08
• UNSPSC Code: 12352301
• EC Index Number: 231-639-5
• NACRES: NA.21
• Beilstein/REAXYS Number: 2037554
• MDL number: MFCD00064589
• Assay: 95-97% (alkalimetric)
• Form: liquid
• Grade: ACS reagent

特性

• 製品名: 硫酸, for analysis (max. 0.005 ppm Hg) EMSURE^® ACS,ISO,Reag. Ph Eur
• grade: ACS reagent
• Quality Segment: 300
• agency: reag. ISO, reag. Ph. Eur.
• vapor density: <0.3 (25 °C, vs air)
• vapor pressure: 0.0001 hPa ( 20 °C), 1 mmHg ( 146 °C)
• product line: EMSURE^®
• assay: 95-97% (alkalimetric)
• form: liquid
• ign. residue: ≤5 ppm
• color: APHA: ≤10
• pH: 0.3 (25 °C, 49 g/L in H₂O)
• bp: ~290 °C (lit.)
• mp: -20 °C
• solubility: water: soluble (caution ! development of heat)
• density: 1.840 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.1 ppm, nitrate (NO₃^-): ≤0.2 ppm, phosphate (PO₄^3-): ≤0.5 ppm
• SMILES string: OS(O)(=O)=O
• cation traces: Ag: ≤0.02 ppm, Al: ≤0.05 ppm, As: ≤0.01 ppm, Ba: ≤0.05 ppm, Be: ≤0.01 ppm, Bi: ≤0.1 ppm, Ca: ≤0.2 ppm, Cd: ≤0.02 ppm, Co: ≤0.01 ppm, Cr: ≤0.05 ppm, Cu: ≤0.01 ppm, Fe: ≤0.1 ppm, Ge: ≤0.05 ppm, Hg: ≤0.005 ppm, K: ≤0.1 ppm, Li: ≤0.01 ppm, Mg: ≤0.05 ppm, Mn: ≤0.01 ppm, Mo: ≤0.05 ppm, NH₄⁺: ≤2 ppm, Na: ≤0.5 ppm, Ni: ≤0.02 ppm, Pb: ≤0.02 ppm, Sr: ≤0.02 ppm, Ti: ≤0.1 ppm, Tl: ≤0.05 ppm, V: ≤0.01 ppm, Zn: ≤0.05 ppm, Zr: ≤0.1 ppm, heavy metals (as Pb): ≤1 ppm
• storage temp.: no temp limit
• InChI: 1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
• InChI key: QAOWNCQODCNURD-UHFFFAOYSA-N

詳細

Application

• Nuclear magnetic resonance analysis of a chemically cross-linked ferrous-methylthymol blue-polyvinyl alcohol radiochromic gel dosimeter.: Researchers applied NMR to analyze a ferrous-methylthymol blue-polyvinyl alcohol gel dosimeter, showing its potential for accurate radiation dose measurements in medical and industrial applications (Eyadeh et al., 2019).



• Discriminate sensing of pyrophosphate using a new tripodal tetramine-based dinuclear Zn(II) complex under an indicator displacement assay approach.: This work presented a novel sensing method for pyrophosphate detection using a Zn(II) complex and methylthymol blue in an indicator displacement assay, highlighting its selectivity and efficiency (Watchasit et al., 2014).



• Direct colorimetric detection of copper(II) ions in sampling using diffusive gradients in thin-films.: The study introduced a colorimetric technique utilizing methylthymol blue for direct detection of copper(II) ions via diffusive gradients in thin-films, offering a simple and effective analytical tool (McGifford et al., 2010).



• Experimental correlation between the pKa value of sulfonphthaleins with the nature of the substituents groups.: This research explored the relationship between the pKa values of sulfonphthaleins, including methylthymol blue, and their substituent groups, providing insights for better understanding and predicting their behavior in various chemical environments (Balderas-Hernández et al., 2008).

Analysis Note

Assay (alkalimetric): 95.0 - 97.0 %
Identity: passes test
Color: ≤ 10 Hazen
Appearance: passes test
Density (d 20/20): 1.834 - 1.837
Chloride (Cl): ≤ 0.1 ppm
Nitrate (NO₃): ≤ 0.2 ppm
Phosphate (PO₄): ≤ 0.5 ppm
Heavy metals (as Pb): ≤ 1 ppm
Ag (Silver): ≤ 0.02 ppm
Al (Aluminium): ≤ 0.05 ppm
As (Arsenic): ≤ 0.01 ppm
Ba (Barium): ≤ 0.05 ppm
Be (Beryllium): ≤ 0.01 ppm
Bi (Bismuth): ≤ 0.1
Ca (Calcium): ≤ 0.2 ppm
Cd (Cadmium): ≤ 0.02 ppm
Co (Cobalt): ≤ 0.01 ppm
Cr (Chromium): ≤ 0.05 ppm
Cu (Copper): ≤ 0.01 ppm
Fe (Iron): ≤ 0.1
Ge (Germanium): ≤ 0.05 ppm
Hg (Mercury): ≤ 0.005 ppm
K (Potassium): ≤ 0.1
Li (Lithium): ≤ 0.01 ppm
Mg (Magnesium): ≤ 0.05 ppm
Mn (Manganese): ≤ 0.01 ppm
Mo (Molybdenum): ≤ 0.05 ppm
NH₄ (Ammonium): ≤ 2 ppm
Na (Sodium): ≤ 0.5 ppm
Ni (Nickel): ≤ 0.02 ppm
Pb (Lead): ≤ 0.02 ppm
Sr (Strontium): ≤ 0.02 ppm
Ti (Titanium): ≤ 0.1
Tl (Thallium): ≤ 0.05 ppm
V (Vanadium): ≤ 0.01 ppm
Zn (Zinc): ≤ 0.05 ppm
Zr (Zirconium): ≤ 0.1
Substances reducing potassium permanganate (as SO₂): ≤ 2 ppm
Residue on ignition: ≤ 5 ppm
Date of expiry: see product label

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

安全性情報

• pictograms: GHS05
• signalword: Danger
• pcodes: P234 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• hcodes: H290,H314
• 保管分類: 8B - Non-combustible corrosive hazardous materials