Molekula
Sodium hydroxide flakes
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sodium hydroxide flakes are a highly versatile strong base used in industrial processes like pH regulation, pulp and paper production, textiles, and water treatment. It also serves as a key reagent in chemical synthesis, cleaning agents, and drain openers. This product has a CAS number of 1310-73-2, a molecular formula of NaOH, and a molecular weight of 40.00 g/mol. It is stored at ambient conditions and carries a **Danger** signal word due to its corrosive properties. Molekula supplies sodium hydroxide flakes from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
1 g — £29.50 per pack ex VAT · £35.40 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White, orthogonal crystals |
| Odour | Odorless |
| Melting Point | 323 °C |
| Boiling Point | 1388 °C |
| Density | 2.13 g/cm³ 25 °C |
| Solubility (other solvents) | 1 g dissolves in 7.2 mL absolute alcohol, 4.2 mL methanol; also soluble in glycerol |
| Vapour Pressure | 1.82 × 10⁻²¹ mmHg at 25 °C (extrapolated) |
Source: PubChem CID 14798 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90005251 |
| CAS Number | 1310-73-2 |
| IUPAC Name | sodium hydroxide |
| EC Number | 215-185-5 |
| Molecular Formula | NaOH |
| Molecular Weight | 40.00 |
| Exact Mass | 39.9925 |
| SMILES | [OH-].[Na+] |
| InChIKey | HEMHJVSKTPXQMS-UHFFFAOYSA-M |
| InChI | InChI=1S/Na.H2O/h;1H2/q+1;/p-1 |
| PubChem CID | 14798 |
| UN Number | UN1823 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28151100 |
| Tariff Code | 2815110000 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- H290 May be corrosive to metals
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Aetznatron
- Caustic soda
- Natriumhydroxid
- Plung
- Rohrputz
- Soda lye
- Soda, caustic
- Sodium hydrate
- SODIUM HYDROXIDE
- White caustic
Frequently asked questions
What is sodium hydroxide flakes commonly used for?
Sodium hydroxide flakes are widely used in chemical manufacturing, paper production, textiles, soaps/detergents, and water treatment.
What is the molecular formula and molecular weight of sodium hydroxide flakes?
The molecular formula is **NaOH**, and the molecular weight is **40.00 g/mol**.
How should sodium hydroxide flakes be stored?
Store in a cool, dry, well-ventilated area at ambient temperature, away from moisture and incompatible substances.
What grades of sodium hydroxide flakes does Molekula supply?
Molekula supplies **industrial-grade sodium hydroxide flakes** (typically 98-99% purity).
Can Molekula supply sodium hydroxide flakes in bulk quantities?
Yes, we offer bulk quantities of sodium hydroxide flakes, with flexible packaging options (e.g., drums, bags).
What documentation comes with an order of sodium hydroxide flakes?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a packing list.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.