Sodium Hydroxide: grade & concentration comparison
Alliance Chemical stocks 14 variants of Sodium Hydroxide (CAS 1310-73-2): ACS Grade 50%, Membrane Grade 50%, ACS 30%, Technical 30%, 25%, ACS Grade 25%, ACS 20%, Technical 20%, ACS 15%, Technical 15%, ACS 10%, Technical 10%, ACS 5%, Technical 5%. Compare grade, concentration, and transport classification below, then open the SDS, technical data sheet, or certificate of analysis for the variant you need.
CAS 1310-73-2 · 14 variants
| Variant | Grade | Concentration | Hazard | Documents |
|---|---|---|---|---|
 Sodium Hydroxide 50% Solution ACS Grade | ACS Grade | 50% |  | SDSTDSCOA |
 Sodium Hydroxide 50% Membrane Grade (Caustic Soda, Lye) | Membrane Grade | 50% | | SDSTDSCOA |
 Sodium Hydroxide 30% ACS Grade | ACS | 30% | | SDSTDSCOA |
 Sodium Hydroxide 30% Technical Grade | Technical | 30% | | SDSTDSCOA |
 Sodium Hydroxide 25% Technical Grade | — | 25% | | SDSTDSCOA |
 Sodium Hydroxide 25% ACS Grade | ACS Grade | 25% | | SDSTDSCOA |
 Sodium Hydroxide 20% ACS Grade | ACS | 20% | | SDSTDSCOA |
 Sodium Hydroxide 20% Technical Grade | Technical | 20% | | SDSTDSCOA |
 Sodium Hydroxide 15% ACS Grade | ACS | 15% | | SDSTDSCOA |
 Sodium Hydroxide 15% Technical Grade | Technical | 15% | | SDSTDSCOA |
 Sodium Hydroxide 10% ACS Grade | ACS | 10% | | SDSTDSCOA |
 Sodium Hydroxide 10% Technical Grade | Technical | 10% | | SDSTDSCOA |
 Sodium Hydroxide 5% ACS Grade | ACS | 5% | | SDSTDSCOA |
 Sodium Hydroxide 5% Technical Grade | Technical | 5% | | SDSTDSCOA |
About these grades
All variants share CAS 1310-73-2. Grade and concentration determine purity specification and strength; each variant's exact specification, hazard classification, and a certificate of analysis are published by Alliance Chemical and linked above. Lot-specific certificates ship with every order.