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: 09 / 10 / 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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Zoey
Good afternoon, we have contracted you to deliver a GK-40 dry powder granulator to Copenhagen, do you deliver to the terminal or to the actual address? 23/10/2026 04:33

Roman Tsibulsky
Hello Zoey, we ship all over Europe and the US including to Copenhagen . The price in the catalog includes any delivery our customer asks for. 23/10/2026 04:34

Sebastian
Waiting for delivery to Albufeira of a TR-02 hard gelatin capsule polishing machine. What about it? 23/10/2026 04:43

Roman Tsibulsky
Hello Sebastian, on your order we inform you that after lunch the driver will contact you to clarify the time and place of unloading. 23/10/2026 04:46

Ella
When is the SL-20 soft strip tablet packaging machine scheduled to be delivered to Tallinn ? 23/10/2026 04:53

Roman Tsibulsky
Hello Ella, Expect tomorrow until 17:30. Once received, please let us know. 23/10/2026 04:56

Aiden
Roman hello, what about the automatic filling and sealing machine for sterile ampoules ABF-4D-1, invoice #101. 23/10/2026 05:03

Roman Tsibulsky
Good afternoon, Aiden! We are making a request to the manufacturer. Tomorrow we will send photos and video of testing to your e-mail. 23/10/2026 05:05

Sophia
Excuse me, I have important information, please do not deliver my shipment, automatic filling and sealing machine for glass ampoules ALG-10 to Lyme, but immediately upon arrival send it to Rotterdam. 23/10/2026 05:13

Roman Tsibulsky
Hello Sophia, we will try to resolve this issue for you. 23/10/2026 05:16

Ellie
Roman, can you tell me if my rotary tablet press RZJ-35 has been shipped yet? Don't send it yet, I will send to your factory in China drawings of new punches, different design. 23/10/2026 05:23

Roman Tsibulsky
Good afternoon, Ellie! We're pausing the shipment. Send drawings to the office mail. The terms of production of new punches 20 working days. 23/10/2026 05:25

Ethan
Natalia hello, what about the counter table tablets and capsules counter TC-10, account #121. 23/10/2026 05:33

Roman Tsibulsky
Hello Ethan, Our manager Natalia tomorrow until 14:30 will call you on WhatsApp. I see the tracking status, on the carrier's website, the shipment will arrive to Toledo in 15 days. 23/10/2026 05:34

Jackson
LW-35 automatic PVC+cardboard blister packaging machine has been on the road for 30 days. What news ? 23/10/2026 05:43

Roman Tsibulsky
Hello Jackson, We are on time, In the afternoon a driver will contact you about unloading. 23/10/2026 05:46

Benjamin
Contract #12, the deadline for delivery has already passed. Take action at last. Accelerate Tsibulsky R.G. 23/10/2026 05:53

Roman Tsibulsky
Hello Benjamin, we are on vacation on weekends and are not able to respond to messages. Raise the contract, delivery time of equipment to your warehouse in Oslo to 50 working ( not calendar) days. Action taken. 23/10/2026 05:54

Samuel
Good day , Electronic conveyor belt package weight detector DK-05 when will we receive in Amsterdam ? 23/10/2026 06:03

Roman Tsibulsky
Hello Samuel, your shipment is in the customs warehouse, in the interval from 10:00-12:00 your manager Natalia will contact you. 23/10/2026 06:04