A7320912
Sodium tetraborate decahydrate , GR,99.5% , 1303-96-4
Synonym(s):
Borax decahydrate;Sodium borate decahydrate;di-Sodium tetraborate decahydrate;Sodium Borate, Decahydrate;Sodium Tetraborate, Dodecahydrate, Borax
CAS NO.：1303-96-4
Empirical Formula: B4H20Na2O17
Molecular Weight: 381.37
MDL number: MFCD00149193
EINECS: 603-411-9
| Pack Size | Price | Stock | Quantity |
| 500G | RMB29.60 | In Stock |
|
| 2.5kg | RMB119.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 75 °C |
| Boiling point: | 320°C |
| Density | 1.73 g/mL at 25 °C(lit.) |
| vapor pressure | 0.213 hPa (20 °C) |
| storage temp. | 2-8°C |
| solubility | H2O: 0.1 M at 20 °C, clear, colorless |
| form | Powder/Solid |
| Specific Gravity | 1.73 |
| color | White, gray, bluish or greenish white |
| PH | 9.21(1 mM solution);9.17(10 mM solution);9.05(100 mM solution); |
| Odor | Odorless |
| PH Range | 9.2 |
| Water Solubility | 60 g/L (20 ºC) |
| λmax | λ: 260 nm Amax: 0.012 λ: 280 nm Amax: 0.010 |
| Merck | 14,8590 |
| Exposure limits | ACGIH: TWA 2 mg/m3; STEL 6 mg/m3 NIOSH: TWA 5 mg/m3 |
| InChIKey | CDMADVZSLOHIFP-UHFFFAOYSA-N |
Description and Uses
Borax is a noncombustible (an inherent fireretardant), bluish-gray or green, odorless crystalline powderor granules. Molecular weight=301.37; Boilingpoint=320℃; Freezing/Melting point=75℃ (rapid heating). Borax is soluble in water; solubility=6% at 20℃.Borax pentahydrate is a white crystalline solid or free-flowing powder. Odorless. Molecular weight=291.4; Specificgravity (H2O:1)=1.82; Melting Point: 200℃; Density:1.82 g/cm3. Soluble in water; solubility=3%.
Buffers; complexing or masking agent.
Safety
| Symbol(GHS) |   GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H319-H360FD |
| Precautionary statements | P202-P264-P280-P305+P351+P338-P308+P313-P337+P313 |
| Hazard Codes | Xn,T |
| Risk Statements | 62-61-60 |
| Safety Statements | 22-24/25-36/37-45-53 |
| OEB | B |
| OEL | TWA: 5 mg/m3 |
| RIDADR | UN 1458 |
| WGK Germany | 1 |
| RTECS | VZ2275000 |
| TSCA | Yes |
| HS Code | 28401990 |
| Toxicity | LD50 orally in rats: 5.66 g/kg (Smyth) |
