Molekula
alpha-Naphthyl acid phosphate, monosodium salt monohydrate
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
Alpha-Naphthyl acid phosphate, monosodium salt monohydrate is an organic phosphate compound primarily used as a substrate for acid and alkaline phosphatase enzymes in biochemical and histochemical assays. Enzymatic hydrolysis releases alpha-naphthol, which couples with a diazonium salt such as Fast Red TR or Fast Blue to form a colored product that indicates phosphatase activity. It appears as a white to off-white crystalline powder. CAS 81012-89-7, molecular formula C10H8NaO4P·H2O, molecular weight 264.15 g/mol. Store at 2–8°C. Signal word: Warning. Molekula supplies alpha-Naphthyl acid phosphate, monosodium salt monohydrate 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 — £55.00 per pack ex VAT · £66.00 inc. VAT
-
25 g — £258.80 per pack ex VAT · £310.56 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 | White/ off white/ pale cream powder |
| Water | ≤10% |
| Identification | Conforms to reference |
| Assay | ≥99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 42045149 |
| CAS Number | 81012-89-7 |
| IUPAC Name | sodium;naphthalen-1-yl hydrogen phosphate;hydrate |
| Molecular Formula | C10H8NaO4P.H2O |
| Molecular Weight | 264.15 |
| Exact Mass | 264.0164 |
| SMILES | C1=CC=C2C(=C1)C=CC=C2OP(=O)(O)[O-].O.[Na+] |
| InChIKey | NSWUDGODQXQNON-UHFFFAOYSA-M |
| InChI | InChI=1S/C10H9O4P.Na.H2O/c11-15(12,13)14-10-7-3-5-8-4-1-2-6-9(8)10;;/h1-7H,(H2,11,12,13);;1H2/q;+1;/p-1 |
| PubChem CID | 23702143 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 2919.90.30.00 |
| Tariff Code | 2919900090 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P403+235 Store in a well ventilated place. Keep cool
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, 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
No alternate names recorded for this product.
Frequently asked questions
What is alpha-Naphthyl acid phosphate, monosodium salt monohydrate used for?
This compound is primarily used as a substrate in enzymatic assays, particularly for alkaline phosphatase activity detection, and in biochemical research applications.
What is the chemical formula and molecular weight?
The formula is C₁₀H₈NaO₄P·H₂O, and the molecular weight is 264.15 g/mol.
How should this product be stored?
Store at 2–8°C in a cool, dry place. Avoid exposure to light and moisture.
What grade or purity is available for this product?
Molekula supplies this product in analytical/biochemical grade with high purity for research and diagnostic applications.
Can Molekula supply this product in bulk quantities?
Yes, we can provide bulk quantities upon request—please contact our sales team for pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
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.