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208043

Sigma-Aldrich

Sodium sulfide nonahydrate

ACS reagent, ≥98.0%

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About This Item

Linear Formula:
Na2S·9H2O
CAS Number:
1313-84-4
Molecular Weight:
240.18
EC Number:
215-211-5
MDL number:
MFCD00149184
UNSPSC Code:
12352302
PubChem Substance ID:
329752036
NACRES:
NA.21
Assay:
≥98.0%
grade:
ACS reagent
form:
crystals or chunks
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

200

Assay

≥98.0%

form

crystals or chunks

reaction suitability

reagent type: catalyst
core: sodium

color

colorless to slightly yellow

anion traces

SO32- and S2O32-: ≤0.1%

cation traces

Fe:, passes test
NH4+: ≤0.005%

storage temp.

2-8°C

SMILES string

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

InChI

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

InChI key

UIINQVYGFKNSPA-UHFFFAOYSA-N

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General description

Sodium sulfide nonahydrate participates in the conversion of nitroxides to amines, via reduction.[1]

Application

Sodium sulfide nonahydrate has been used as a source of H2S, to study the effect of H2S on amyloid fibrils associated with neurodegenerative diseases.[2] It has been used in the preparation of sulfide standards for the quantitative analysis of sulfides in raw wastewater (sewage) samples.[3]
It serves as a catalyst during synthesis of thioamides.[4]
Sodium sulfide nonahydrate has been used as a standard for the quantification of volatile sulfur compounds in cheese samples by gas chromatography.[5] It reacts with 4-(2′-hydroxyaryl)-2-(N,N-dialkylamino)-1,3-dithiolium perchlorates in ethanol at room temperature and boiling ethanol to form 1,3-dithiole-2-thiones and 2′-hydroxyacetophenones, respectively.[6] Sodium sulfide nonahydrate may be used as a reducing agent for the conversion of vic-dibromides to the corresponding olefins via reductive debromination.[7]

Signal Word

Danger

Hazard Statements

H302,H311,H314,H410

Hazard Classifications

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

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCR8519
MKCQ9794
MKCP9698
MKCQ4385
MKCN0692

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A new reduction system: combination of sodium sulfide (sodium hydrosulfide) with phase transfer agent in a two-phase mixture. Reductive debromination ofvic-dibromides to olefins.
Nakayama J, et al.
Tetrahedron Letters, 24(29), 3001-3004 (1983)
Reaction of 4-(2'-Hydroxyaryl)-1, 3-dithiolium Salts with Sodium Sulfide. A Selective Synthesis of 2'-Hydroxyacetophenones.
Birsa ML.
Synthetic Communications, 33(17), 3071-3076 (2003)
Daniel L Priebbenow et al.
Chemical Society reviews, 42(19), 7870-7880 (2013-06-25)
The Willgerodt-Kindler reaction has, in recent years, received limited attention and application in synthetic organic chemistry. With the advent of new technology such as microwave-assisted heating, several new, high-yielding, practical, and more environmentally friendly reaction protocols have been developed. This
Preservation and simultaneous analysis of relevant soluble sulfur species in sewage samples
Keller-Lehmann B, et al.
Proceedings of the 2nd International Conference on Intelligent Technologies and Engineering Systems (ICITES2013). Springer International Publishing, 2014., 26 (2006)
Reduction of nitroxides to amines by sodium sulfide.
Kornblum N and Pinnick HW.
The Journal of Organic Chemistry, 37(12), 2050-2051 (1972)
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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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