# Sodium hydroxide flakes (caustic soda)

Source: https://gfclinics.pl/ingredients/sodium-hydroxide-flakes/
Last reviewed: 2026-10-17 · Green Future Clinics P.S.A.

Sodium hydroxide is a strong alkali supplied as solid flakes of at least 98% purity. It is corrosive (Skin Corr. 1A) and transported as UN 1823.

Synonyms: Caustic soda flakes; NaOH

## Technical data

| Property | Value |
|---|---|
| CAS | 1310-73-2 |
| EC | 215-185-5 |
| Molecular formula | NaOH |
| Molar mass | 40.00 g/mol |
| Pharmacopoeia / standards | Ph. Eur.; USP–NF |
| Grade | ≥98% NaOH, industrial grade; pharmacopoeial grade on request |
| Appearance | White, hygroscopic flakes |
| Typical packaging | 25 kg PE-lined bags; big bags |
| Category | Chemical |
| Status | On request |

## Documents provided

- Safety data sheet (EU format, PL/EN)
- REACH registration information
- Specification and batch CoA
- Certificate of origin
- Dangerous goods documents (UN 1823)

## Applications

pH regulation and saponification in soap, detergent, cosmetic and chemical manufacturing; water treatment.

## Regulatory notes

REACH-registered; CLP: causes severe skin burns and eye damage (H314).

## Verification

- https://pubchem.ncbi.nlm.nih.gov/compound/14798

Quotes and documents: https://gfclinics.pl/contact/?product=sodium-hydroxide-flakes