Product Documents

Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye)

50%

CAS Number
1310-73-2
Category
Bases & Salts

Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye) (CAS 1310-73-2) is a chemical product supplied by Alliance Chemical in the Bases & Salts category, available as 50%. For transport it is classified as UN1824, DOT hazard class 8, and packing group II. Its GHS signal word is Danger. Documentation includes a safety data sheet (SDS), a technical data sheet (TDS), and a certificate of analysis (COA), available below and published from Alliance Chemical's canonical product data.

GHS pictogram: CorrosiveCorrosiveGHS pictogram: Irritant / harmfulIrritant / harmfulGHS pictogram: Health hazardHealth hazard
CLASS 8 · UN1824Danger
1-gallon HDPE bottle of 50% Sodium Hydroxide (Caustic Soda) with chemical hazard diamonds, Alliance Chemical brand, green
2D chemical structure of Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye)
Structure · PubChem
SDSSafety Data Sheet — hazards, handling, first aid, and transport.TDSTechnical Data Sheet — identity, properties, and specifications.COACertificate of Analysis — typical analytical results.
Compare all 14 grades of Sodium Hydroxide →
Download document packet (ZIP)SDS, technical data, and a sample certificate of analysis in one file.

About these documents

Alliance Chemical publishes these documents from its canonical product data. Chemical identity, hazard classification, and physical properties are sourced from named authorities (DOT 49 CFR, OSHA, ECHA, PubChem) and internal laboratory records — each value carries per-field provenance and a last-reviewed date. A Certificate of Analysis with lot-specific results ships with every order.

Last reviewed 2026-05-20.