Caustic Soda Flakes 99% (Sodium Hydroxide)

Caustic Soda Flakes 99% (Sodium Hydroxide) (CAS 1310-73-2, molecular formula NaOH) is a core commodity reagent used wherever reliable acid or alkali strength matters — from surface treatment and pH correction to downstream salt manufacture. China Chemicals supplies it at 99% 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 Sodium Hydroxide, Lye, Caustic Soda. 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

Soap and detergent saponification
Pulp and paper kraft pulping
Alumina refining and metal processing
Effluent neutralisation and pH correction
CIP caustic cleaning in food and beverage plants

Technical specification

Chemical name	Caustic Soda Flakes 99% (Sodium Hydroxide)
Synonyms	Sodium Hydroxide, Lye, Caustic Soda
CAS number	1310-73-2
Molecular formula	NaOH
Appearance	White flakes, hygroscopic
Assay NaOH	99.0% min
Sodium carbonate	0.5% max
Sodium chloride	0.1% max
Iron (Fe2O3)	0.005% max
Appearance	White flakes
Packaging	Moisture-barrier lined

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: UN1823 · Corrosive, Class 8. 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.