Pasta exsiccans

Basic bismuth gallate-containing zinc ointment with a drying and astringent effect. In dermatology, Pasta exsiccans is mainly used as a paste in combination with zinc oxide (e.g. Pasta exsiccans NRF 11.112). Due to the prescribable pH range of 6 to 10, bismuth salts should not be combined with acidic components.

pasta exsiccans

Bismuth gallate, basic 10,0 g

Zinc oxide 25,0 g

Talcum 25,0 g

Linseed oil, native 20,0 g

Wool wax 20,0 g

Note: The NRF formula 11.112 has a similar composition - it contains instead of

Talcum only zinc oxide and instead of wool wax vaseline. The NRF limits the

Shelf life to 3 months, mainly due to possible oil leakage and oxidative

Changes in linseed oil. In this recipe the oil leakage is caused by the

talcum use and the use of heat during production is minimized. At

Linseed oil should be used as fresh as possible in order to achieve a corresponding

to be able to guarantee longer durability.

Production

1. melt wool wax on a water bath at about 50°C until clear.

2. weigh bismuth gallate, zinc oxide and talcum into a bowl and mix well - As dust may be generated, work should be done in a fume cupboard and a mouth guard should be worn.

3. add linseed oil to the powder mixture and work in

4. add the melted wool wax and work it in homogeneously as well

5. for final homogenisation, the paste can be stirred again in an Unguator/Topitec crusher

Organoleptic test: A homogeneous, grey-yellow paste is obtained, which must not contain any powder agglomerates.

Shelf life: 12 months

Pasta exsiccans (SR)

Bism. subgallic. 10,0 g

Ol. Lini 20.0 g

Zinc. oxide. 50.0 g

Ungt. alcohol. lanae SR ad 100.0 g