1.01516

Sulfuric acid

96%, Ultrapur

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

Properties

• product name: Sulfuric acid 96%, Ultrapur
• grade: for inorganic trace analysis
• Quality Level: 100
• Agency: suitable for EPA 300
• vapor density: <0.3 (25 °C, vs air)
• vapor pressure: 0.0001 hPa ( 20 °C); 1 mmHg ( 146 °C)
• Assay: 96% (acidimetric)
• form: liquid
• 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: Ag: ≤50 ppt; Al: ≤200 ppt; As: ≤20 ppt; Au: ≤20 ppt; Ba: ≤200 ppt; Be: ≤20 ppt; Bi: ≤20 ppt; Ca: ≤1000 ppt; Cd: ≤20 ppt; Ce: ≤20 ppt; Co: ≤20 ppt; Cr: ≤200 ppt; Cu: ≤50 ppt; Dy: ≤20 ppt; Er: ≤20 ppt; Eu: ≤20 ppt; Fe: ≤500 ppt; Ga: ≤20 ppt; Gd: ≤20 ppt; Ge: ≤20 ppt; Hf: ≤10 ppt; Hg: ≤500 ppt; Ho: ≤20 ppt; In: ≤20 ppt; K: ≤500 ppt; La: ≤20 ppt; Li: ≤20 ppt; Lu: ≤20 ppt; Mg: ≤500 ppt; Mn: ≤20 ppt; Mo: ≤50 ppt; Na: ≤500 ppt; Nb: ≤20 ppt; Nd: ≤20 ppt; Ni: ≤100 ppt; Pb: ≤100 ppt; Pd: ≤50 ppt; Pr: ≤20 ppt; Pt: ≤20 ppt; Rb: ≤20 ppt; Sb: ≤20 ppt; Sc: ≤20 ppt; Se: ≤500 ppt; Sm: ≤20 ppt; Sn: ≤20 ppt; Sr: ≤20 ppt; Ta: ≤50 ppt; Tb: ≤20 ppt; Te: ≤50 ppt; Th: ≤10 ppt; Ti: ≤50 ppt; Tl: ≤20 ppt; Tm: ≤20.0 ppt; U: ≤10.00 ppt; V: ≤20 ppt; W: ≤100 ppt; Y: ≤10.0 ppt; Yb: ≤20.0 ppt; Zn: ≤200 ppt; Zr: ≤20.0 ppt
• SMILES string: OS(O)(=O)=O
• storage temp.: 2-30°C
• InChI: 1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)
• InChI key: QAOWNCQODCNURD-UHFFFAOYSA-N

Description

Application

• A novel premixing strategy for highly sensitive detection of nitrite on paper-based analytical devices.: This study introduces a new premixing method to enhance the sensitivity of nitrite detection using N-(1-naphthyl) ethylenediamine dihydrochloride. The method significantly improves the detection limits and accuracy, making it a valuable tool for various analytical applications (Xu et al., 2024).



• Electrochemical Self-Assembled Gold Nanoparticle SERS Substrate Coupled with Diazotization for Sensitive Detection of Nitrite.: The study demonstrates the use of N-(1-naphthyl) ethylenediamine dihydrochloride to generate azo compounds, that assemble on the surface of AuNP/ITO an electrochemically self-assembled gold nanoparticle substrate for surface-enhanced Raman spectroscopy (SERS), coupled with diazotization, to detect nitrite with high sensitivity (Han et al., 2022).

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H290 - H314
• Precautionary Statements: 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 Code: 8A - Combustible, corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable