223697

Potassium hydrogensulfate, fused

ACS reagent, Mixture of K₂S₂O₇ and KHSO₄

• MDL number: MFCD00066385
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752314
• NACRES: NB.24

Properties

• grade: ACS reagent
• Quality Level: 200
• form: powder
• concentration: 37.5-38.6% H₂SO₄ in NaOH (titration)
• impurities: ≤0.002% H₂SO₄; ≤0.01% insolubles; ≤2.5% water
• acid number: 37.5‑38.6%
• density: 2.512 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.002%; phosphate (PO₄^3-): ≤0.001%
• cation traces: Ca: ≤0.002%; Fe: ≤0.002%; Mg: ≤0.001%; Na: ≤0.01%; heavy metals: ≤0.001%
• SMILES string: [K+].[K+].[K+].OS([O-])(=O)=O.[O-]S(=O)(=O)OS([O-])(=O)=O
• InChI: 1S/3K.H2O7S2.H2O4S/c;;;1-8(2,3)7-9(4,5)6;1-5(2,3)4/h;;;(H,1,2,3)(H,4,5,6);(H2,1,2,3,4)/q3*+1;;/p-3
• InChI key: ZXJZSJHWYNTTSK-UHFFFAOYSA-K

Safety Information

• pictograms: GHS06,GHS05
• signalword: Danger
• hcodes: H314,H331,H335
• pcodes: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Inhalation - Eye Dam. 1 - Skin Corr. 1A - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable