84727

Sulfuric acid

for the determination of nitrogen, ≥97.0%

• Linear Formula: H₂SO₄
• CAS Number: 7664-93-9
• Molecular Weight: 98.08
• Beilstein/REAXYS Number: 2037554
• EC Number: 231-639-5
• MDL number: MFCD00064589
• UNSPSC Code: 12000000
• PubChem Substance ID: 329769317
• NACRES: NA.21

Properties

• grade: for inorganic trace analysis
• Quality Level: 100
• agency: suitable for SM 4500 - NH3
• vapor density: <0.3 (25 °C, vs air)
• vapor pressure: 1 mmHg ( 146 °C)
• description: Nominally 95-98% H₂SO₄
• assay: ≥97.0%
• form: liquid
• quality: for the determination of nitrogen
• impurities: ≤0.0005% total nitrogen (N)
• ign. residue (900°C): ≤0.0005%
• color: clear
• bp: ~290 °C (lit.)
• density: 1.840 g/mL at 25 °C (lit.)
• 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

General description

Sulfuric acid can be produced by dry distillation of iron sulfate heptahydrate, copper sulfate pentahydrate. When these compounds were heated they decompose to form iron and copper oxides eliminating water and sulphur trioxide which combine together to form dilute solution of sulphuric acid. It is suitable as dehydrating agent, catalyst, active reactant in chemical industry. It is also suitable to control pH of saline solutions to strong fuming acids.

Application

Sulfuric acid may be used as digestive reagent in Kjeldahl method to determine nitrogen.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H314
• pcodes: P234 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• 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
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter