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431648

Sigma-Aldrich

Sodium sulfide nonahydrate

≥99.99% trace metals basis

Sinónimos:

Disodium sulfide nonahydrate, Sodium sulfide enneahydrate

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About This Item

Fórmula lineal:
Na2S·9H2O
Número de CAS:
1313-84-4
Peso molecular:
240.18
Número CE:
215-211-5
Número MDL:
MFCD00149184
Código UNSPSC:
12352300
ID de la sustancia en PubChem:
24867038
NACRES:
NA.23
Ensayo:
≥99.99% trace metals basis
Formulario:
crystals and lumps
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Nivel de calidad

100

Ensayo

≥99.99% trace metals basis

Formulario

crystals and lumps

idoneidad de la reacción

reagent type: catalyst
core: sodium

impurezas

<100 ppm total metallic impurities

trazas de anión

SO32- and S2O32-: ≤0.1%

trazas de catión

Fe:, passes test
NH4+: ≤0.005%

temp. de almacenamiento

2-8°C

cadena SMILES

O.O.O.O.O.O.O.O.O.[Na]S[Na]

InChI

1S/2Na.9H2O.S/h;;9*1H2;

Clave InChI

UIINQVYGFKNSPA-UHFFFAOYSA-N

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Descripción general

Sodium sulfide nonahydrate is a chemical compound with the formula Na2S-H2O. It is a white to yellow hygroscopic solid that is highly soluble in water and has a strong, unpleasant odor. Sodium sulfide nonahydrate is typically made by dissolving elemental sulfur in a solution of sodium hydroxide, which leads to the formation of sodium sulfide. The nonahydrate form of the compound is formed by adding excess water to the solution, which leads to the formation of a crystalline solid with nine molecules of water per molecule of sodium sulfide. Sodium sulfide nonahydrate is often used as a reducing agent in chemical reactions as well as a flotation agent in the mining industry. It is also used in the production of dyes, pigments, and other chemicals.

Aplicación

Sodium sulfide nonahydrate (Na2S.9H2O) can be reacted with α,ω-dibromo and/or α,ω-dichloroalkane for the synthesis of polyalkylene sulfide.[1] It can be used as a reducing agent for the removal of nitrogen oxide from the exhaust gas.[2] Na2S.9H2O can also be used as an inexpensive sulfur source for the synthesis of heterocyclic thiochromes.[3]

Palabra de señalización

Danger

Frases de peligro

H302,H311,H314,H410

Clasificaciones de peligro

Acute Tox. 3 Dermal - Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1B

Código de clase de almacenamiento

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificados de análisis (COA)

Lot/Batch Number
MKCQ8774
MKCM7034
MKCK4607
MKCF5850
MKCF5002

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Absorption-reduction technique assisted by ozone injection and sodium sulfide for NOx removal from exhaust gas
Mok YS
Chemical Engineering Journal, 118(1-2), 63-67 (2006)
The synthesis of polymeric sulfides by reaction of dihaloalkanes with sodium sulfide
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Questions

1–2 of 2 Questions  

  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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