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Key Documents

1.00716

Supelco

Sulfuric acid

25%, for analysis EMSURE®

Synonym(s):

Sulfuric acid solution

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About This Item

Linear Formula:
H2SO4
CAS Number:
Molecular Weight:
98.08
Beilstein:
2037554
MDL number:
UNSPSC Code:
12352301
NACRES:
NA.21

product name

Sulfuric acid 25%, for analysis EMSURE®

Quality Level

product line

EMSURE®

form

liquid

concentration

≥25% (alkalimetric)

impurities

≤0.010 ppm As (Arsenic)
≤0.010 ppm Be (Beryllium)
≤0.010 ppm Co (Cobalt)
≤0.010 ppm Cu (Copper)
≤0.010 ppm Li (Lithium)
≤0.010 ppm Mn (Manganese)
≤0.010 ppm Sr (Strontium)
≤0.010 ppm V (Vanadium)
≤0.020 ppm Ag (Silver)
≤0.020 ppm Cd (Cadmium)
≤0.020 ppm Ni (Nickel)
≤0.020 ppm Pb (Lead)
≤0.050 ppm Al (Aluminium)
≤0.050 ppm Ba (Barium)
≤0.050 ppm Cr (Chromium)
≤0.050 ppm Ge (Germanium)
≤0.050 ppm Mg (Magnesium)
≤0.050 ppm Mo (Molybdenum)
≤0.050 ppm Tl (Thallium)
≤0.100 ppm Bi (Bismuth)
≤0.100 ppm Fe (Iron)
≤0.100 ppm K (Potassium)
≤0.100 ppm Ti (Titanium)
≤0.100 ppm Zn (Zinc)
≤0.100 ppm Zr (Zirconium)
≤0.2 ppm Nitrate (NO3)
≤0.200 ppm Ca (Calcium)
≤0.5 ppm Chloride (Cl)
≤0.500 ppm Na (Sodium)
≤2 ppm NH? (Ammonium)
≤2 ppm Substances reducing potassium permanganate (as SO2)

ign. residue

≤5 ppm

color

APHA: ≤10

bp

103 °C/1013 hPa

density

1.18 g/cm3 at 20 °C

storage temp.

no temp limit

SMILES string

OS(O)(=O)=O

InChI

1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)

InChI key

QAOWNCQODCNURD-UHFFFAOYSA-N

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Analysis Note

Assay (alkalimetric): ≥ 25.0 %
Colour: ≤ 10 Hazen
Chloride (Cl): ≤ 0.5 ppm
Nitrate (NO₃): ≤ 0.2 ppm
Ag (Silver): ≤ 0.020 ppm
Al (Aluminium): ≤ 0.050 ppm
As (Arsenic): ≤ 0.010 ppm
Ba (Barium): ≤ 0.050 ppm
Be (Beryllium): ≤ 0.010 ppm
Bi (Bismuth): ≤ 0.100 ppm
Ca (Calcium): ≤ 0.200 ppm
Cd (Cadmium): ≤ 0.020 ppm
Co (Cobalt): ≤ 0.010 ppm
Cr (Chromium): ≤ 0.050 ppm
Cu (Copper): ≤ 0.010 ppm
Fe (Iron): ≤ 0.100 ppm
Ge (Germanium): ≤ 0.050 ppm
K (Potassium): ≤ 0.100 ppm
Li (Lithium): ≤ 0.010 ppm
Mg (Magnesium): ≤ 0.050 ppm
Mn (Manganese): ≤ 0.010 ppm
Mo (Molybdenum): ≤ 0.050 ppm
NH₄ (Ammonium): ≤ 2 ppm
Na (Sodium): ≤ 0.500 ppm
Ni (Nickel): ≤ 0.020 ppm
Pb (Lead): ≤ 0.020 ppm
Sr (Strontium): ≤ 0.010 ppm
Ti (Titanium): ≤ 0.100 ppm
Tl (Thallium): ≤ 0.050 ppm
V (Vanadium): ≤ 0.010 ppm
Zn (Zinc): ≤ 0.100 ppm
Zr (Zirconium): ≤ 0.100 ppm
Substances reducing potassium permanganate (as SO₂): ≤ 2 ppm
Residue on ignition: ≤ 5 ppm

Legal Information

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

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Protocols

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Method: Spectrophotometric, ADMI weighted ordinate method for colored water and wastewater

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Photometric determination using the indophenol blue method after extraction with calcium chloride solution

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