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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 : 07 / 02 / 2026
In stock
Manufacturer : 1 year for Classification of ointments by type of dispersed systems

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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Oliver
We received our order (BG-150 film coating boiler) in the box there was no spraying nozzle !!! 11/02/2026 03:01

Roman Tsibulsky
Hello Oliver, 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. 11/02/2026 03:01

Wyatt
Can your technician come to Istanbul? We need technologist consultation and assistance. 11/02/2026 03:11

Roman Tsibulsky
Wyatt, We have already received your email. A technician as stipulated in the contract will contact you. Don't worry. 11/02/2026 03:11

Alexander
When is the SL-20 soft strip tablet packaging machine scheduled to be delivered to Tallinn ? 11/02/2026 03:21

Roman Tsibulsky
Hello Alexander, Expect in the interval from 14:00-16:00. Once received, please let us know. 11/02/2026 03:23

Samuel
Waiting for delivery to Tossa de Mar of a TR-02 hard gelatin capsule polishing machine. What about it? 11/02/2026 03:31

Roman Tsibulsky
Hello Samuel, on your order we inform you that tomorrow until 18: 30 the driver will contact you to clarify the time and place of unloading. 11/02/2026 03:34

Mia
Tell me the NJ-120 automatic capsule machine went ? 11/02/2026 03:41

Roman Tsibulsky
Mia, good afternoon. Yes, already tomorrow until 18: 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. 11/02/2026 03:44

Elizabeth
Hello, I will quickly ask, what about BG-80 film coating boiler and HX-7 ultrasonic machine for sealing plastic tubes, contract No. 11 ???? 11/02/2026 03:51

Roman Tsibulsky
Elizabeth, good afternoon! Your positions are produced by different factories, for HX-7 the factory reported that it is 90% ready, for BG-80 we are waiting for an answer as stipulated in the contract. We will report back immediately. 11/02/2026 03:52

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Please inform me about the status of the order Rotary tablet press RZ-10A in Oklahoma City ? 11/02/2026 04:01

Roman Tsibulsky
Good afternoon, Aria. We have contacted the carrier, delivery is scheduled In the afternoon. Please let us know when you receive it. Thank you. 11/02/2026 04:03

Avery
To what address to send you samples of bottles and caps to send them to the factory ? Regards Avery. 11/02/2026 04:11

Roman Tsibulsky
Good day, Avery We received the same question on WhatsApp and replied there as well. Kindly provide the shipment number for tracking purposes. Thank you. 11/02/2026 04:14

Lucas
Natalia tell me, automatic double-sided labeling machine ST-36 has left the factory, invoice #118. 11/02/2026 04:21

Roman Tsibulsky
Hello Lucas, The equipment has been shipped from the transit warehouse and delivery is proceeding as planned. No delays are expected. 11/02/2026 04:21

Henry
Vacuum lyophilic freeze dryer LG-30, can we get faster than the contract ? 11/02/2026 04:31

Roman Tsibulsky
Hello Henry, Shipments go through several time stages. Manufacturing, delivery from the factory to the warehouse in Beijing or Shanghai, waiting for batch collection, customs clearance and delivery. It's hard to predict. 11/02/2026 04:32