Ammonium Hydrogen Sulfate, CAS 7803-63-6, for acidic process, reagent and synthesis applications. Before requesting a quotation, confirm assay and acidity basis, moisture, physical form, relevant impurities, moisture-protected packaging and intended process and request current TDS, COA and SDS.
Ammonium Hydrogen Sulfate CAS 7803-63-6
- CAS: 7803-63-6
- Synonyms: Ammonium hydrogen sulfate; Ammonium bisulfate; Ammonium acid sulfate; NH₄HSO₄
- Einecs: 232-265-5
- Molecular Formula: NH₄HSO₄
- Grade: Confirm on the offered specification and lot COA: assay and acidity basis, moisture, physical form, relevant impurities, moisture-protected packaging and intended process.
- Package: Moisture-protected packaging; confirm configuration for physical form, quantity and destination
Product Description
Product name: Ammonium Hydrogen Sulfate
CAS: 7803-63-6
EC number: 232-265-5
Molecular Formula: NH₄HSO₄
Molar mass: 115.11 g/mol
Physicochemical properties
Melting point: 147 °C
Boiling point: 350 °C (dec.) (lit.)
Density: 1.79 g/mL at 25 °C (lit.)
Solubility: 1 M H₂O at 20 °C, clear, colourless
Properties: white to colourless hygroscopic crystalline solid; confirm physical form and moisture on the offered specification.
Water solubility: easily soluble in water, almost insoluble in ethanol, acetone and pyridine, and its aqueous solution is highly acidic.
Industrial use and procurement boundary
Uses: acidic process salt and reagent for selected synthesis and process applications. Confirm assay and acidity basis, moisture, physical form, relevant impurities, packaging and intended process; this page does not establish shampoo, flame-retardant, fertilizer, developer or leather-depilatory suitability.

FAQ - Technical & Supply Chain
-
Q:
Are Ammonium Hydrogen Sulfate and Ammonium Sulfate the same salt?
A: No. Ammonium hydrogen sulfate, also called ammonium bisulfate, is NH₄HSO₄, CAS 7803-63-6. Ammonium sulfate is (NH₄)₂SO₄ and has a different acid-base balance and stoichiometry. The purchase order should state the exact salt, CAS number and concentration or assay basis. -
Q:
Which specifications should be agreed for industrial Ammonium Hydrogen Sulfate?
A: Set assay, free acidity, water, insoluble matter, chloride, iron and other metals with the applicable methods. Confirm whether the material is supplied as a solid or solution, the expected particle form, packaging moisture barrier and storage temperature. Review the COA and SDS before approving the lot.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
Send the CAS number, grade, quantity, packing preference and destination.
Sample & Supply
Support is available for samples, trial orders, bulk and repeat supply.
Storage & Shipping
Product-specific conditions are confirmed before order.


