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ICHTHAMMOL the ammonium salt of dark sulfonated shale oil (DSSO) is used successfully as active pharmaceutical ingredient of natural origin for more than 100 years in treatment of skin disorders. Ichthammol is a product of natural origin obtained in the first step by dry distillation of sulfur-rich oil shale. It is used in medicine as a remedy for treating some skin diseases, such as acne, eczema and psoriasis.

Pharmacologically, DSSO have anti-inflammatory, bactericidal and fungicidal properties. It used in such preparations like:

  • Suppositories with Ichthammol - anti-inflammatory agent topically-applied for pelvic organs;
  • Ichthammol ointment - commonly used in 10% or 20% concentrate ointment form as a remedy for treating some skin diseases, such as acne, eczema and psoriasis.
  • Ichthammol-nathtalan ointment – use as a remedy for inflammatory skin and muscle diseases, radiculitis and decubitus.
Specifications Accepted limits
EP, BP grades USP grade
1Formation of a resinous precipitateCorrespondsCorresponds
2Reaction of ammonium saltsCorrespondsCorresponds
3Identification of SulphurCorrespondsCorresponds
4Acidity of AlkalinityCorrespondsCorresponds
5Sulphated Ash, max0.3%0.3%
6Dry Matter50.0 – 56.0%50.0 – 56.0%
7Total Sulphur, min14.0%10.0%
8Sulphur in the form of Sulphate, max20%Not determinated
9Organically combined Sulphur, min10.5%Not determinated
10Ammonium Sulphate, maxNot determinated8%
11Total ammonia4.5 – 7.0%2.5% Min.
12Relative density1.040 – 1.0851.040 – 1.085
13Consistency and ColourDense, blackish-brown liquid with specific smellDense, blackish-brown liquid with specific smell
14Miscibility water and glycerolCompleteComplete

Ichthammol EP, BP and USP grades. Certification documents.