Sodium Hydroxide 25% Solution
CAS 1310-73-2 · Part MC-NAOH25L · Technical
Twenty-five percent caustic soda, diluted in our Arleta facility. Stays liquid in cold weather and skips the on-site dilution step and its exotherm.
Specification
- CAS number
- 1310-73-2
- Part number
- MC-NAOH25L
- Grade
- Technical
- Physical form
- Liquid
- Assay / concentration
- 25% w/w
- pH
- > 13
- Transport
- UN1824, Class 8, PG II
- Category
- Caustics & Alkalis
- Also known as
- caustic soda 25, dilute caustic, lye solution, NaOH
Twenty-five percent caustic is a dilution of the 50% solution, made to order in Arleta and released against a Certificate of Analysis.
Why buy it diluted
Two reasons come up repeatedly. First, 25% does not crystallise at the temperatures an unheated outdoor tank reaches in a Southern California winter, so it stays pumpable without heat tracing. Second, it removes the dilution step from your operation — caustic dilution is strongly exothermic and is a common source of burns and equipment damage when done without proper controls.
Typical uses
- pH control where the dosing system is sized for a dilute feed
- Smaller treatment systems that cannot safely handle 50%
- Sites without the containment or heating for concentrated caustic
Custom concentrations
We blend to other concentrations on request. If your system is designed around a specific strength, tell us the target and we will make it and certify it rather than have you dilute on site.
Documents
Available to account holders and sent the same business day. If you need documents routinely, ask us to attach them to your shipping paperwork automatically rather than requesting them one at a time.
Current revision, sixteen-section GHS format
Measured results for the lot you received
Read the sheet before the first use
Section 2 covers the hazards, Section 8 the protective equipment actually required, and Section 10 what this must not be stored next to. Storage incompatibility is the single most common cause of serious chemical incidents.
More in Caustics & Alkalis
| Product | CAS | Available as | Documents |
|---|---|---|---|
| Sodium Hydroxide 50% Solution Technical / Membrane grade | 1310-73-2 | Bulk 275 gal tote 55 gal drum | SDS · CoA |
| Potassium Hydroxide 45% Solution Technical | 1310-58-3 | 275 gal tote 55 gal drum | SDS · CoA |
If your approval process needs something that is not here, one email gets it.
Certificates, insurance, registrations, safety data sheets, and completed supplier questionnaires. Standard documents go out the same business day.