Molekula
Sodium hydroxide pearls
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 pearls is a highly caustic inorganic compound used primarily in industrial cleaning, pH regulation, and chemical manufacturing due to its strong alkaline properties. It dissolves quickly in water and is available in pearl form for controlled handling. This product has a CAS number of 1310-73-2, a molecular formula of NaOH, and a molecular weight of 40.00 g/mol. Store at ambient temperatures, handling with care as it carries a **Danger** signal word. Molekula supplies sodium hydroxide pearls 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.
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1 kg — £18.60 per pack ex VAT · £22.32 inc. VAT
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5 kg — £62.00 per pack ex VAT · £74.40 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
| Property | Value |
|---|---|
| Appearance | Caustic Soda Pearls are solid small fused white pellets or microprills, colourless, odourless and very hygroscopic |
| Sodium chloride | <200mg/kg |
| Sodium sulphate | <120mg/kg |
| Cadmium (Cd) | <0.2mg/kg |
| Iron (Fe) | <10mg/kg |
| Lead (Pb) | <0.5mg/kg |
| Mercury (Hg) | <0.01mg/kg |
| Arsenic (As) | <0.6mg/kg |
| Calcium (Ca) | <10mg/kg |
| Copper (Cu) | <0.2mg/kg |
| Magnesium (Mg) | <6mg/kg |
| Nickel (Ni) | <10mg/kg |
| Zinc (Zn) | <0.1mg/kg |
| Chromium (Cr) | <2/mg/kg |
| Manganese (Mn) | <0.2mg/kg |
| Aluminium (Al) | <1mg/kg |
| Antimony (Sb) | <0.2mg/kg |
| Selenium (Se) | <0.2mg/kg |
| Sodium hydroxide (NaOH) % | >99% |
| Sodium chlorate | <60mg/kg |
| Silicon Dioxide (SiO2) | <20mg/kg |
| Sodium carbonate (Na2CO3) | <0.4% |
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 | 90005479 |
| 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
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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 pearls commonly used for?
Sodium hydroxide pearls are widely used in industrial cleaning, pH regulation, pulp and paper processing, textile manufacturing, and as a key reagent in chemical synthesis.
What is the chemical formula and molecular weight of sodium hydroxide pearls?
The chemical formula is **NaOH**, and the molecular weight is **40.00 g/mol**.
How should sodium hydroxide pearls be stored?
Store in a tightly sealed container at **ambient temperature**, away from moisture, carbon dioxide, and incompatible substances like acids or aluminum.
What grades of sodium hydroxide pearls does Molekula supply?
Molekula supplies **technical-grade sodium hydroxide pearls** (typically 97-99% purity) suitable for industrial applications.
Can Molekula supply sodium hydroxide pearls in bulk quantities?
Yes, Molekula can supply sodium hydroxide pearls in bulk, with quantities tailored to your production needs—contact us for specific packaging options.
What documentation comes with an order of sodium hydroxide pearls?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and a product specification sheet detailing purity, impurities, and compliance with industry standards.
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.