1.00748

Sulfuric acid

98%, for the determination of nitrogen

• Synonym(s): Sulfuric acid
• Linear Formula: H₂SO₄
• CAS Number: 7664-93-9
• Molecular Weight: 98.08
• Beilstein/REAXYS Number: 2037554
• MDL number: MFCD00064589
• UNSPSC Code: 12352301
• EC Index Number: 231-639-5
• NACRES: NA.21

Properties

• product name: Sulfuric acid 98%, for the determination of nitrogen
• vapor density: <0.3 (25 °C, vs air)
• Quality Level: 300
• vapor pressure: 0.0001 hPa ( 20 °C); 1 mmHg ( 146 °C)
• assay: ≥97.5% (alkalimetric)
• form: liquid
• ign. residue: ≤2 ppm
• pH: 0.3 (25 °C, 49 g/L in H₂O)
• bp: ~290 °C (lit.)
• mp: -20 °C
• density: 1.840 g/mL at 25 °C (lit.)
• cation traces: N: ≤1 ppm
• 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

Description

Application

Sulfuric acid 98% can be used in the Kjeldahl method for the determination of nitrogen.

Analysis Note

Assay (alkalimetric): ≥ 97.5 %
Total nitrogen (N): ≤ 1 ppm
Residue on ignition: ≤ 2 ppm
Date of expiry: see product label

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H314
• pcodes: P234 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable