8.40104

1,5-Naphthalenedisulfonic acid

for synthesis

• Synonym(s): 1,5-Naphthalenedisulfonic acid, Armstrong acid
• Empirical Formula (Hill Notation): C₁₀H₈O₆S₂
• CAS Number: 81-04-9
• Molecular Weight: 288.30
• UNSPSC Code: 12352106
• EC Index Number: 201-317-9
• NACRES: NA.22

Properties

• vapor pressure: 51 hPa ( 50 °C)
• Quality Level: 200
• assay: ≥97.0% (HPLC)
• potency: 2420 mg/kg LD₅₀, oral (Rat)
• pH: 2.4 (20 °C, 1 g/L in H₂O)
• mp: 110 °C (decomposes)
• solubility: 1030 g/L
• bulk density: 900 kg/m³
• storage temp.: 2-30°C
• InChI: 1S/C10H8O6S2/c11-17(12,13)9-5-1-3-7-8(9)4-2-6-10(7)18(14,15)16/h1-6H,(H,11,12,13)(H,14,15,16)
• InChI key: XTEGVFVZDVNBPF-UHFFFAOYSA-N

Description

Analysis Note

Assay (HPLC, area%): ≥ 97.0 % (a/a)
Water (K. F.): 22.0 - 26.0 %
Identity (IR): passes test

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290 - H314
• pcodes: P234 - P260 - P280 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
• Storage Class: 8A - Combustible, corrosive hazardous materials
• wgk_germany: WGK 3