Sodium hydroxide
SIGALD/795429 - anhydrous, free-flowing, pellets, Redi-Dri™, ACS reagent, ≥97%
Synonym: ‘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
Free-flowing salts
Loss on Drying Graph
Redi-Dri free-flowing salts
The Redi-Dri™ packaging system eliminates the common issue of clumping that is noted with many hygroscopic salts and buffers and provides free-flowing, ready-to- use material at all times.
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 795429-500G
This image depicts SKU: 795429-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 795429-1KG
This image depicts SKU: 795429-1KG
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 795429-2.5KG
This image depicts SKU: 795429-2.5KG
| agency | suitable for DIN 38407-42 |
| suitable for EPA 1621 | |
| suitable for EPA 533 | |
| suitable for EPA 8327 | |
| suitable for EPA OTM-45 | |
| suitable for SM 4500 - NH3 | |
| anion traces | chloride (Cl-): ≤0.005% |
| phosphate (PO43-): ≤0.001% | |
| sulfate (SO42-): ≤0.003% | |
| assay | ≥97% |
| cation traces | Fe: ≤0.001% |
| heavy metals (as Ag): ≤0.002% | |
| Hg: ≤0.1 ppm | |
| K: ≤0.02% | |
| Ni: ≤0.001% | |
| density | 2.13 g/cm3 |
| form | pellets |
| grade | ACS reagent |
| anhydrous | |
| impurities | ≤0.001% N compounds |
| ≤0.02% NH4OH ppt. | |
| ≤1.0% Na2CO3 | |
| InChI | 1S/Na.H2O/h;1H2/q+1;/p-1 |
| InChI key | HEMHJVSKTPXQMS-UHFFFAOYSA |
| mp | 318 °C (lit.) |
| product line | Redi-Dri™ |
| quality | free-flowing |
| Quality Level | 100  |
| SMILES string | [OH-].[Na+] |
| solubility | water: soluble 1260 g/L at 20 °C |
| vapor density | >1 (vs air) |
| vapor pressure | <18 mmHg ( 20 °C) |
| 3 mmHg ( 37 °C) |
| Application: | Sodium hydroxide (NaOH) was used in the following processes: • Preparation of sodium 3,3′-bis(sulfonato)-4,4′- • Preparation of electrolyte solution to study the effect of electrolyte composition on the conversion of CO2 to CO by electrochemical reduction. • Preparation of CSK (cytoskeleton) buffer for the three-dimensional (3D) slide method of preserving the 3D chromatin structure of testicular germ cells. • Synthesis of ZSMs (zeolite socony mobils). Sodium hydroxide may be employed for the deterimination of specific surface area of colloidal silica, via titration. It may be employed for the direct oxidation of sodium borohydride, which was investigated by cyclic and linear voltammetry, chronoamperometry and chronopotentiometry. It may be used to prepare citrate buffer and borate buffer. It may be used in the synthesis of : • alkylaryl amidosulfobetaines • (3 -[4-teroctylphenoxyethoxy • trisulfobetaines (TriSBn) Sodium hydroxide may be used as a base in titration methods, dissolution testing, for adjusting pH and in the impinger to remove acidic gases. It may be used in the following processes: • Conversion of glycerol to glyceric acid in the presence of gold catalyst. • Palladium-catalyzed cross-coupling reaction between vinylalkoxysilanes and aryl bromides or chlorides to form styrenes. |
| Features and Benefits: | • Increased efficiency – Eliminate time and effort of loosening hardened powders • Safety – Avoid risks of using tools of force to break up clumps • Economy – Faster preparation and solvation increase productivity and reduce costs • Assured quality – Excellent, expert-tested quality with no anti-caking agents • Flexible volumes – Available from research amounts to scale-up quantities |
| General description: | Sodium hydroxide (NaOH) also known as caustic soda is a water soluble inorganic base with a wide range of industrial application such as titration, dissolution testing and in impinger to remove acidic gases. It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite. It participates in solvent-free aldol condensation reaction. |
| Legal Information: | Redi-Dri is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 1, 2.5 kg in poly bottle |
| Packaging: | 500 g in poly bottle |
| 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 | ≥97% |
| mp | 318 °C (lit.) |
| Density | 2.13 g/cm3 |
| UNSPSC | 12352316 |