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Key Documents

05211

Sigma-Aldrich

Idrossido di sodio

purum, ≥32%

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About This Item

Formula condensata:
NaOH
Numero CAS:
Peso molecolare:
40.00
Numero CE:
Numero MDL:
Codice UNSPSC:
12352106
ID PubChem:
NACRES:
NA.21

Tensione di vapore

3 mmHg ( 37 °C)

Livello qualitativo

Grado

purum

Forma fisica

solution

Concentrazione

≥32%

tecniche

titration: suitable

Impurezze

≤0.001% heavy metals (as Pb)

pH

14

Densità

1.327 g/cm3 at 25 °C

Anioni in tracce

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

Cationi in tracce

Fe: ≤20 mg/kg

Stringa SMILE

[OH-].[Na+]

InChI

1S/Na.H2O/h;1H2/q+1;/p-1
HEMHJVSKTPXQMS-UHFFFAOYSA-M

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Descrizione generale

Sodium hydroxide participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite. It also participates in solvent-free aldol condensation reaction.

Applicazioni

Sodium hydroxide may be employed for the determination 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 compose citrate buffer and borate buffers. It may be used in the synthesis of :
  • alkylaryl amidosulfobetaines
  • (3-[4-teroctylphenoxyethoxyethoxyethyl] dimethylammonio propane sulfonate (XOSB)
  • trisulfobetaines (TriSBn)

Altre note

The article number 05211-4X2.5L will be discontinued. Please order the single bottle 05211-2.5L which is physically identical with the same exact specifications.
The article number 05211-4X5L will be discontinued. Please order the single bottle 05211-5L which is physically identical with the same exact specifications.

Pittogrammi

Corrosion

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Codice della classe di stoccaggio

8B - Non-combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable


Certificati d'analisi (COA)

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Glycerol is oxidised to glyceric acid with 100% selectivity using either 1% Au/charcoal or 1% Au/graphite catalyst under mild reaction conditions (60 degrees C, 3 h, water as solvent).

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