Sodium hydroxide
SIGMA/71687 - BioUltra, for luminescence, ≥98.0% (T), pellets
Synonym: Caustic Lye; Caustic Soda; Soda Lye; Sodium Hydrate; ‘Caustic soda’
CAS Number: 1310-73-2
Empirical Formula (Hill Notation): HNaO
Molecular Weight: 40.00
EC Number: 215-185-5
MDL Number: MFCD00003548
Linear Formula: NaOH
Product Type: Chemical
| λ | 1 M in H2O |
| anion traces | chloride (Cl-): ≤70 mg/kg |
| phosphate (PO43-): ≤5 mg/kg | |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥98.0% (T) |
| cation traces | Ag: ≤5 mg/kg |
| Al: ≤5 mg/kg | |
| As: ≤0.1 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤10 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| Hg: ≤0.1 mg/kg | |
| K: ≤500 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤5 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| density | 2.13 g/cm3 |
| form | pellets |
| grade | for luminescence |
| impurities | insoluble matter, passes filter test |
| ≤0.0003% total nitrogen (N) | |
| ≤0.0005% silicon dioxide (SiO2) | |
| ≤1.0% sodium carbonate (Na2CO3) | |
| InChI | 1S/Na.H2O/h;1H2/q+1;/p-1 |
| InChI key | HEMHJVSKTPXQMS-UHFFFAOYSA |
| mp | 318 °C (lit.) |
| product line | BioUltra |
| Quality Level | 100  |
| SMILES string | [OH-].[Na+] |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| suitability | in accordance for luminescence |
| technique(s) | cell culture | mammalian: suitable |
| UV absorption | λ: 260 nm Amax: 0.015 |
| λ: 280 nm Amax: 0.01 | |
| vapor density | >1 (vs air) |
| vapor pressure | <18 mmHg ( 20 °C) |
| 3 mmHg ( 37 °C) |
| Application: | Sodium Hydroxide is generally used in the solid or 50% solution form. It is suitable for use at various stages of soaps, paper, rayon, and petroleum product manufacturing. It is also used in carbohydrate research using FTIR analysis. Sodium Hydroxide is used as a pre-treatment reagent to study enzymatic hydrolysis. |
| General description: | Sodium Hydroxide, also known as caustic soda or lye, is a white crystalline odorless solid which is corrosive and absorbs moisture from the air. When dissolved in water, Sodium Hydroxide generates heat to ignite combustible materials. In the form of pellets, Sodium Hydroxide, when dissolved, forms a colorless liquid, denser than water. |
| Symbol |  GHS05 |
| Signal word | Danger |
| Hazard statements | H290 - H314 |
| Precautionary statements | P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 |
| Hazard Codes | C |
| Risk Statements | 35 |
| Safety Statements | 26-37/39-45 |
| RIDADR | UN 1823 8 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥98.0% (T) |
| mp | 318 °C (lit.) |
| Density | 2.13 g/cm3 |
| UNSPSC | 12352316 |