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71690

Sigma-Aldrich

Hidróxido de sódio

puriss. p.a., ACS reagent, K ≤0.02%, ≥98.0% (T), pellets

Sinônimo(s):

‘Soda cáustica’

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About This Item

Fórmula linear:
NaOH
Número CAS:
Peso molecular:
40.00
Número CE:
Número MDL:
Código UNSPSC:
12352302
ID de substância PubChem:
NACRES:
NA.21
Preço e disponibilidade não estão disponíveis no momento.

grau

ACS reagent
puriss. p.a.

densidade de vapor

>1 (vs air)

pressão de vapor

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

Ensaio

≥98.0% (T)

Formulário

pellets

técnica(s)

cell culture | plant: suitable

Impurezas

≤0.0003% total nitrogen (N)
≤0.0005% silicon dioxide (SiO2)
≤1.0% sodium carbonate (Na2CO3)

pf

318 °C (lit.)

solubilidade

water: soluble 1,260 g/L at 20 °C

densidade

2.13 g/cm3 at 20 °C

traços de ânion

chloride (Cl-): ≤10 mg/kg
phosphate (PO43-): ≤5 mg/kg
sulfate (SO42-): ≤5 mg/kg

traços de cátion

Ag: ≤5 mg/kg
Al: ≤5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤5 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: ≤200 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
Tl: ≤5 mg/kg
Zn: ≤5 mg/kg

cadeia de caracteres SMILES

[OH-].[Na+]

InChI

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

chave InChI

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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Descrição geral

Sodium hydroxide (NaOH) is an inorganic base. It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite.[1] It also participates in solvent-free aldol condensation reaction.[2]

Aplicação

Sodium hydroxide may be employed for the direct oxidation of sodium borohydride, which was investigated by cyclic and linear voltammetry, chronoamperometry and chronopotentiometry.[3] It may be used to compose citrate buffer and borate buffers.[4]
It may be used in the synthesis of following compounds:[5]
  • alkylaryl amidosulfobetaines
  • (3-[ 4-teroctylphenoxyethoxyethoxyethyl] dimethylammonio propane sulfonate (XOSB)
  • trisulfobetaines (TriSBn)

Outras notas

Reagent for the decomposition of silicates by fusioncitationcitation
Reagent for the decomposition of silicates by fusion[6][7]

Pictogramas

Corrosion

Palavra indicadora

Danger

Frases de perigo

Classificações de perigo

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

Código de classe de armazenamento

8B - Non-combustible corrosive hazardous materials

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable


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Chemoselective, solvent-free aldol condensation reaction.
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Kinetics of sodium borohydride direct oxidation and oxygen reduction in sodium hydroxide electrolyte: Part I. BH4- electro-oxidation on Au and Ag catalysts.
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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