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161527 Sigma-Aldrich

Sodium hydrosulfide hydrate



Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Research Essentials, Salts,
mp   52-54 °C (lit.)


General description

Sodium hydrosulfide hydrate is a hydrated inorganic salt of sodium. It participates in the synthesis of (E)-2-cyano-2-(thiazolidin-2-ylidene)ethanethioamide.


It may be used as a sulfur nucleophile to induce the C-S bond formation in α,β-dichloro vinyl ketones to form 5- to 8-membered cyclic thioethers.

Sodium hydrosulfide hydrate may be used in the synthesis of following:
• benzothiazole
• 4-methoxybenzothioamide
• 2-(4-methoxyphenyl)imidazoline
• 7-chloro-4′-methoxythioflavone


1 kg in glass bottle

3 kg in steel drum

5, 100 g in glass bottle

Safety & Documentation

Safety Information

GHS05  GHS05
Signal word 
Hazard statements 
UN 2949 8 / PGII
WGK Germany 
Flash Point(F) 
194 °F
Flash Point(C) 
90 °C


Certificate of Analysis


Certificate of Origin


Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products.Once you log onto our website, you will find the price and availability displayed on the product detail page.You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 orview local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What is the typical water content of Product 161527, Sodium hydrosulfide hydate? That is, how many waters of hydration?
Product No. 161527 is typically a sesquihydrate, meaning 1.5 moles of water per mole of NaHS.
What are the impurities in Product 161527, Sodium hydrosulfide hydate?
The impurities are sodium sulfide, water, sodium sulfoxide, sodium carbonate and iron.
What is the sodium hydrosulfide (NaHS) content for Product 161527, Sodium hydrosulfide hydate?
The NaHS content of this product is typically about 70%. The value for each lot is reported on the Certifcate of Analysis (CofA). CofAs are available from our website, www.sigmaaldrich.com
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