221465
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221465
Sigma-Aldrich
Sodium hydroxide
ACS reagent, ≥97.0%, pellets
| Synonym: | ‘Caustic soda’ |
| CAS Number: | 1310-73-2 |
| Linear Formula: | NaOH |
| Molecular Weight: | 40.00 |
| EC Number: | 215-185-5 |
| MDL number: | MFCD00003548 |
| PubChem Substance ID: | 24853242 |
Description
| Packaging | 12 kg in poly drum |
| 2.5 kg in poly btl | |
| 25, 500, 6×500 g in poly btl | |
| 12kg packaged in open-head poly drums; 25g, 500g, 2.5kg packaged in poly bottles |
Properties
| grade | ACS reagent |
| vapor density | >1 (vs air) |
| vapor pressure | <18 mmHg ( 20 °C) |
| 3 mmHg ( 37 °C) | |
| assay | ≥97.0% |
| form | pellets |
| total impurities | ≤0.001% N compounds |
| ≤0.02% NH4OH ppt. | |
| ≤1.0% Na2CO3 | |
| mp | 318 °C(lit.) |
| anion traces | chloride (Cl-): ≤0.005% |
| phosphate (PO4-): ≤0.001% | |
| sulfate (SO42-): ≤0.003% | |
| cation traces | Fe: ≤0.001% |
| Hg: ≤0.1 ppm | |
| K: ≤0.02% | |
| Ni: ≤0.001% | |
| heavy metals (as Ag): ≤0.002% |
Safety
| Personal Protective Equipment | Eyeshields, Faceshields, Gloves, Respirators, Reusable Respirators |
| Hazard Codes | C |
| Risk Statements | 35 |
| Safety Statements | 26-37/39-45 |
| RIDADR | UN1823 8/PG 2 |
| WGK Germany | 1 |
| RTECS | WB4900000 |
References
| Merck | Merck 13,8701 |
| Fieser | Fieser 5,616 / Fieser 7,336 / Fieser 8,460 |
| reference | Aldrich MSDS 1, 1611:A / Corp MSDS 1 (2), 3144:A / RegBook 1 (3), 3363:C / Sax 6, 2434 |
