Boric Acid (Crystal)
Orthoboric Acid
Product Code. |
00455 |
Grade |
|
Purity |
99.5% |
CAS No. |
10043-35-3 |
Molecular Formula |
H3BO3 |
Molecular Weight |
61.83 |
H.S.Code |
2810.00200 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White powder |
Odour |
Odorless |
| pH value |
3.8 - 4.8 |
Melting point/ Freezing point [°C] |
160 °C |
Boiling point [°C] |
300 °C |
| Vapour pressure [20°C] |
3.5 hPa at 20 °C |
Density [g/cm3] |
1.44 |
Solubility in water [% weight] |
Soluble in water |
Packaging
Specification
| Appearance | White powder/crystals/crystalline powder |
| Assay (acidimetric) | Min 99.5% |
| DNases (exo and endonucleases) | None detected |
| Insoluble matter | Passes filter test |
| Non volatile substances in MeOH/HCl | Max 0.05% |
| Phosphatase | None detected |
| RNases | None detected |
| Loss on drying (at 120°C) | Max 0.5% |
| Solubility (1 M in water) | Complete,colorless |
| pH (saturated solution in water) | 3.6 - 4.6 |
| Chloride (Cl) | Max 0.0005% |
| Phosphate (PO4) | Max 0.0005% |
| Sulphate (SO4) | Max 0.0005% |
| Heavy metal (as Pb) | Max 0.0005% |
| Arsenic (As) | Max 0.00005% |
| Sodium (Na) | Max 0.005% |
| UV absorbance 1 M in water | |
| Wavelength | Absorption Max. |
| 260 nm | 0.015 |
| 280 nm | 0.010 |
Safety Information and Hazard Symbols
Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H360
Precaution Statement: P201-P308 + P313