39365-88-3 Usage
Description
Liver of sulfur, also known as sulfurated potash, is a poorly defined mixture of potassium sulfide, potassium polysulfide, potassium thiosulfate, and possibly potassium bisulfide. It is mainly used in metalworking to form a patina, turning copper alloys brown or black. Liver of sulfur is typically found in a dry rock form that must be broken into smaller pieces and dissolved in hot water for use. Historically, it has been used in pharmaceutical preparations such as "white lotion" for the treatment of skin diseases and to combat arthritis. However, it is no longer favored for medical purposes due to the toxicity of sulfides and polysulfides. It can also be used in the preparation of N-substituted thionamides.
Used in Metalworking Industry:
Liver of sulfur is used as a patina agent for copper, brass, bronze, and nickel alloys to achieve decorative color effects. It forms a brown or black patina on these metals, enhancing their appearance and providing a protective layer.
Used in Pharmaceutical Industry:
Although its use has declined due to toxicity concerns, liver of sulfur has been historically used in pharmaceutical preparations such as "white lotion" for the treatment of skin diseases like acne and other skin disorders. It was also once used to combat arthritis.
Used in Analytical Chemistry:
Potassium sulfide, a component of liver of sulfur, is used primarily in analytical chemistry for various applications, including the determination of metal ions and the synthesis of metal sulfide compounds.
Used in Preparation of N-substituted Thionamides:
Liver of sulfur can be used in the preparation of N-substituted thionamides, which are compounds with potential applications in various fields, such as pharmaceuticals and materials science. Examples of N-substituted thionamides include (+)-(S)-thion-α-methylbutyramide, (+)-(S)-(thionhydratropyl) morpholine, and (+)-(S)-N-methylthion-α-methylbutyramide.
Sources
https://en.wikipedia.org/wiki/Liver_of_sulfur
https://www.sigmaaldrich.com/catalog/product/sial/253049?lang=en®ion=US
https://www.alfa.com/en/catalog/041550/
https://www.morebooks.de/store/us/book/liver-of-sulfur/isbn/978-613-0-95829-9
Check Digit Verification of cas no
The CAS Registry Mumber 39365-88-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,3,6 and 5 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 39365-88:
(7*3)+(6*9)+(5*3)+(4*6)+(3*5)+(2*8)+(1*8)=153
153 % 10 = 3
So 39365-88-3 is a valid CAS Registry Number.
