Molekula
4-Nitrophenyl phosphate disodium salt hexahydrate (PNPP)
4-Nitrophenyl phosphate disodium salt hexahydrate (PNPP) is a water-soluble substrate used in enzymatic assays, particularly for measuring alkaline phosphatase activity. It is a yellow compound that produces a colored product upon enzymatic hydrolysis, enabling spectrophotometric detection. CAS: 4264-83-9, Molecular Formula: C6H4NNa2O6P · 6H2O, Molecular Weight: 371.14 g/mol, Storage: 2 to 8 °C, Signal Word: Warning. Molekula supplies PNPP from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
4-Nitrophenyl phosphate disodium salt hexahydrate (PNPP) is a water-soluble substrate used in enzymatic assays, particularly for measuring alkaline phosphatase activity. It is a yellow compound that produces a colored product upon enzymatic hydrolysis, enabling spectrophotometric detection. CAS: 4264-83-9, Molecular Formula: C6H4NNa2O6P · 6H2O, Molecular Weight: 371.14 g/mol, Storage: 2 to 8 °C, Signal Word: Warning. Molekula supplies PNPP from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Pricing & pack sizes
Specifications
| Property | Value |
|---|---|
| Appearance | Off-white to light yellow coloured crystalline powder |
| Purity (HPLC) | ≥98.0% |
| Solubility | Freely soluble in water |
| pH (5% solution) | 8.0 - 10.5 |
| Free Inorganic Phosphates | ≤ 1.0% |
| Moisture Content | 28.0 - 31.5% |
| Identification (IR) | Conforms to Reference |
| Molar Absorptivity | ≥ 9,600 |
| PNP content(by HPLC) | ≤100 ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Shelf Life | 48 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 35359763 |
| CAS Number | 4264-83-9 |
| Molecular Formula | C6H4NNa2O6P · 6H2O |
| Molecular Weight | 371.14 |
| SMILES | C1=CC(=CC=C1[N+](=O)[O-])OP(=O)([O-])[O-].[Na+].[Na+] |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2919.90.3000 |
| Tariff Code | 2919900090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
For research and industrial use only
Documents
Safety Data Sheets (SDS)
Available in PT, US, FR, IT, ES, DE, EN.
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PT - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · PT · 171 KB
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US - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · US · 168 KB
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FR - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · FR · 170 KB
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IT - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · IT · 168 KB
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ES - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · ES · 171 KB
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DE - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · DE · 171 KB
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EN - (35359763) 4-NITROPHENYL PHOSPHATE DISODIUM SALT HEXAHYDRATE (PNPP) [4264-83-9].pdf
SDS · EN · 167 KB
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 4-Nitrophenyl phosphate disodium salt hexahydrate used for?
It is primarily used as a substrate in enzyme assays, particularly for alkaline phosphatase, to measure enzyme activity through colorimetric detection.
What is the chemical formula and molecular weight of PNPP?
The formula is C6H4NNa2O6P · 6H2O with a molecular weight of 371.14 g/mol.
How should PNPP be stored?
Store at 2 to 8 °C in a cool, dry place, protected from light and moisture.
What grade is available for this product?
Available in analytical grade, suitable for laboratory research and assay applications.
Can Molekula supply PNPP in bulk quantities?
Yes, Molekula can supply PNPP in bulk; please contact our sales team for pricing and availability.
What documentation comes with my order?
Each order includes a Certificate of Analysis (CoA) and safety data sheet (SDS) with the shipment.
Ready to order or need a custom pack?
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