Aluminium Sulphate 17% (Alum)

Aluminium Sulphate 17% (Alum) (CAS 10043-01-3, molecular formula Al2(SO4)3) is a treatment chemical specified by municipal and industrial plant operators where dose consistency and impurity control directly affect finished water quality. China Chemicals supplies it at Al2O3 17% min in pack sizes from 1 kg through to 1000 kg Bulk Bag, so laboratory trial quantities and full production volumes can be sourced from the same specification.

It is also traded as Alum, Filter Alum, Aluminium Sulfate. Every consignment ships with a batch-specific Certificate of Analysis and the current Safety Data Sheet, and material is stored and picked under stock rotation so you receive product well inside its shelf life.

Typical applications

Coagulation in municipal water treatment
Paper sizing and retention aid
Wastewater phosphate precipitation
Soil pH reduction in agriculture
Textile mordant in dyeing

Technical specification

Chemical name	Aluminium Sulphate 17% (Alum)
Synonyms	Alum, Filter Alum, Aluminium Sulfate
CAS number	10043-01-3
Molecular formula	Al2(SO4)3
Appearance	White to off-white granules or lumps
Al2O3 content	17.0% min
Free acid as H2SO4	0.3% max
Iron as Fe2O3	0.5% max
Water insolubles	0.3% max
Arsenic	2 ppm max
Appearance	White granular

Values above are typical and are confirmed on the Certificate of Analysis issued against each batch. Tighter specifications can be quoted where a process requires them.

Packaging and supply

Available in 1 kg, 5 kg, 25 kg Bag, 1000 kg Bulk Bag. Bulk, road tanker and export drum quantities are quoted on request, including FOB and CIF terms for international shipment. Pricing shown is per pack in USD, exclusive of freight and any applicable duties.

Handling and safety

Transport classification: Not regulated · Causes serious eye irritation. Store in the original closed container in a cool, well-ventilated area away from incompatible materials, and handle using appropriate personal protective equipment. Read the Safety Data Sheet in full before use — it is issued with every order and is available on request before purchase.

Supply to industry only. Products are sold for legitimate industrial, laboratory and manufacturing use. We may request end-use details and business registration before releasing an order.