Di-Sodium Tetraborate Decahydrate 25gm
di-Sodium tetraborate decahydrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S)=9.18₀ (25°C) Certipur®. CAS 1303-96-4.
Manufacturer: Merck
Catalog ID: 101964.0025
Stock: In Stock
Description
| Catalogue Number | 101964 |
| Synonyms | Borax, Sodium biborate decahydrate, Sodium borate decahydrate |
| Description | di-Sodium tetraborate decahydrate |
Product Information
| CAS number | 1303-96-4 |
| EC index number | 005-011-01-1 |
| EC number | 215-540-4 |
| Hill Formula | B₄Na₂O₇*10H₂O |
| Chemical formula | Na₂B₄O₇*10 H₂O |
| Molar Mass | 381.32 g/mol |
| HS Code | 2840 19 90 |
Applications
| Application | di-Sodium tetraborate decahydrate certified secondary standard reference material for pH measurement; directly traceable to primary SRM from NIST/PTB pH(S)=9.18₀ (25°C) Certipur®. CAS 1303-96-4. |
Physicochemical Information
| Density | 1.72 g/cm3 (20 °C) |
| Melting Point | 75 °C Elimination of water of crystallisation |
| pH value | 9.2 (47 g/l, H₂O, 20 °C) |
| Vapor pressure | 0.213 hPa (20 °C) |
| Bulk density | 750 kg/m3 |
| Solubility | 49.74 g/l |
Toxicological Information
| LD 50 oral | LD50 Rat 2660 mg/kg |
| LD 50 dermal | LD50 Rabbit > 2000 mg/kg |
Storage and Shipping Information
| Storage | Store at +15°C to +25°C. |
Specifications
| pH-value (25 °C) | 9.180 - 9.186 |
| Identity | passes test |
