СATALOGUE / PHARMACEUTICAL PRODUCTION TECHNOLOGIES / Classification of ointments by type of dispersed systems

Classification of ointments by type of dispersed systems

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СATALOGUE / PHARMACEUTICAL PRODUCTION TECHNOLOGIES / Classification of ointments by type of dispersed systems

Classification of ointments by type of dispersed systems

From the point of view of technology (production cycle), as well as the physicochemical nature of the base and the nature of distribution of drug substances in the base The classification of ointments according to the type of dispersed systems is of greatest importance. According to this classification, homogeneous and heterogeneous ointments are distinguished. Homogeneous ointments are characterized by the absence of interfacial interface between the drug substances and the base. In such ointments, the drug substances are distributed in the base by the type of solution, ie, brought to molecular or micellar dispersibility. Depending on the method of obtaining it can be: ointments-alloys, which are a combination of several fusible mutually soluble components, ointments-solutions, which contain medicinal substances dissolved in the base, extraction ointments obtained by extraction (extraction) of various plant or animal materials melted ointment base or vegetable oil.

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Information updated: 10 / 05 / 2026
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Production: 1 year на оборудование для производства мазей

Model: Classification of ointments

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Since the solutions are not miscible with fatty bases, the resulting ointments are emulsions in which the dispersed medium is usually the ointment base. Most ointment-emulsions contain emulsifiers, so that the ointments are quite highly dispersed and stable. However, there are ointments that are stable only due to the high viscosity of the dispersion medium. In such ointments, the dispersed phase consists of large droplets. Combined (suspension-emulsion) ointments are the most complex multicomponent systems that include simultaneously drug substances soluble in the ointment base, insoluble powdered ingredients and aqueous solutions of drug substances, i.e. systems in which several substances with different physicochemical properties are simultaneously present.

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Technical specifications

Heterogeneous ointments are characterized by the presence of an interfacial interface between the drug substances and the base. Heterogeneous ointments are two- or multiphase systems. Depending on the nature of the distribution of drug substances in the base heterogeneous ointments are divided into suspension (trituration), emulsion and combined (suspension-emulsion). Suspension (trituration) ointments are systems containing solid powdery drug substances insoluble in the ointment base and distributed in it by suspension type. Suspension ointments contain drug substances insoluble in water and fat.

Additional information

In the form of suspensions are also administered drugs that dissolve in water, but their solutions are caustic and can cause skin irritation and necrotic phenomena (resorcinol, pyrogallol, zinc sulfate, mercury dichloride, segnet salt”). In the suspended state in ointments are also introduced substances that require a significant amount of water for their dissolution (borax, boric acid). Ointments-suspensions may contain one or more drug substances, and each of them has its own interfacial interface. Thus, suspension ointments are two-, three-, and multiphase systems. Emulsion ointments are characterized by the presence of liquid dispersed phase, insoluble in the ointment base and distributed in it as an emulsion.

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Carter
Good afternoon, we received the PR-15 powder dispenser in plastic vials, scheduled in the morning to open the box and test. 28/05/2026 12:37

Roman Tsibulsky
Carter, Good afternoon. Great news, please WhatsApp +79853643808 to send photo and video report. 28/05/2026 12:38

Scarlett
When purchasing the RY-200 centrifugal type powder granulator, I asked for tests on our powder 28/05/2026 12:47

Roman Tsibulsky
Hello Scarlett, Please send 2 kg of your raw material to the address given to you by Natalia. After the test, the engineer will inform you about the results. 28/05/2026 12:47

Joseph
Tell me the NJ-120 automatic capsule machine went ? 28/05/2026 12:57

Roman Tsibulsky
Joseph, good afternoon. Yes, already tomorrow until 16:30 you will receive it. Taking into account the heavy weight of the equipment, we ask you to take care of unloading by forklift in advance. The transportation company does not provide unloading. Only delivery to the address. 28/05/2026 13:01

Savannah
Good afternoon, we have contracted you to deliver a GK-40 dry powder granulator to Sofia, do you deliver to the terminal or to the actual address? 28/05/2026 13:07

Roman Tsibulsky
Hello Savannah, we ship all over Europe and the US including to Sofia . The price in the catalog includes any delivery our customer asks for. 28/05/2026 13:09

Mason
Waiting for delivery to Saint Paul de Vence of a TR-02 hard gelatin capsule polishing machine. What about it? 28/05/2026 13:17

Roman Tsibulsky
Hello Mason, on your order we inform you that closer to evening the driver will contact you to clarify the time and place of unloading. 28/05/2026 13:20

Elijah
LB-205 horizontal automatic wet alcohol wipes packaging machine delivery status ...thank you 28/05/2026 13:27

Roman Tsibulsky
Hello Elijah, it is too early to check the status of your order. In 30 days only the epat of production will be completed. 28/05/2026 13:30

Samuel
We received our order (BG-150 film coating boiler) in the box there was no spraying nozzle !!! 28/05/2026 13:37

Roman Tsibulsky
Hello Samuel, we checked with the factory. Your nozzle was not received in time for the shipment of the main machine. We will now deliver it to you by DHL express mail. 28/05/2026 13:41

Penelope
Rotary tablet press RZK-25 I want to order with delivery to Berlin 28/05/2026 13:47

Roman Tsibulsky
Good day, Penelope We have checked the information on your request, unfortunately the factory has stopped production of this model of equipment. Send to the mail a description of your task, or contact your manager. We will help in any case with the choice. 28/05/2026 13:49

Mateo
Roman, our company bought VL-100 V-shaped powder mixer, but it is not enough for us, can we return it and exchange it for V-300 model? 28/05/2026 13:57

Roman Tsibulsky
Mateo, good afternoon. When we corresponded with you, I warned you that this is a model with a small load. Unfortunately we can not pick up the equipment. As an option, we will offer our customers with a discount. 28/05/2026 14:01

William
To what address to send you samples of bottles and caps to send them to the factory ? Regards William. 28/05/2026 14:07

Roman Tsibulsky
Good day, William We received the same question on WhatsApp and replied there as well. Kindly provide the shipment number for tracking purposes. Thank you. 28/05/2026 14:10