science

Kolliphor EL

Kolliphor EL is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kolliphor EL rather than just read about it. In short: Kolliphor EL, formerly known as Cremophor EL, is the registered trademark of BASF Corp. for its version of polyethoxylated castor oil. It is prepared by reacting 35 moles of ethylene oxide with each mole of castor oil.

Key takeaways

Kolliphor EL belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kolliphor EL to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kolliphor EL from memory before moving on to harder problems.

Reference excerpt

Kolliphor EL, formerly known as Cremophor EL, is the registered trademark of BASF Corp. for its version of polyethoxylated castor oil. It is prepared by reacting 35 moles of ethylene oxide with each mole of castor oil. The resulting product is a mixture (CAS number 61791-12-6): the major component is the material in which the hydroxyl groups of the castor oil triglyceride have been ethoxylated with ethylene oxide to form polyethylene glycol ethers. Minor components are the polyethyelene glycol esters of ricinoleic acid, polyethylene glycols and polyethylene glycol ethers of glycerol. Kolliphor EL is a synthetic, nonionic surfactant used to stabilize emulsions of nonpolar materials in water. Kolliphor EL is an excipient or additive in drugs. Therapeutically, modern drugs are rarely given in a pure chemical state, so most active ingredients are combined with excipients or additives such as Kolliphor EL.

Uses Miconazole, anti-fungal Paclitaxel (Taxol), anti-cancer Aci-Jel (acetic acid / oxyquinoline / ricinoleic acid - vaginal) Sandimmune (cyclosporine injection, USP) Nelfinavir mesylate, HIV protease inhibitor Propofol, intravenous anaesthetic agent, originally solublized with Cremophor EL in trials; later approved with a lipid emulsion Diazepam injection; superseded by lipid emulsion alternative (Diazemuls) Vitamin K injection Ixabepilone, anti-cancer

Side effects Allergic reactions to Taxol are most often allergic reactions to Kolliphor EL; symptoms include tightness in the chest, shortness of breath, and similar reactions consistent with severe anaphylactic reactions. Although many anti-allergens including corticosteroids and Benadryl may be administered before chemotherapy, they are not always sufficient to prevent the severe reaction to Kolliphor EL. Allergic reaction should not be confused with the normal side effects of Taxol. The allergic reaction is usually immediate, similar to severe allergic reactions typical of other allergens. BASF offers a purified, injectable version of Kolliphor EL, known as Kolliphor ELP.

Worked examples

Example 1 — a first encounter with Kolliphor EL

Start with the simplest possible case. Write down what Kolliphor EL claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kolliphor EL before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kolliphor EL ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kolliphor EL

In research: Kolliphor EL appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kolliphor EL in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kolliphor EL is common in secondary-school and first-year university syllabi. It links to neighbouring topics Excipients, so understanding it makes those chapters shorter.
In everyday life: Look for Kolliphor EL outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Kolliphor EL in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kolliphor EL means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kolliphor EL out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kolliphor EL in simple terms?

Why does Kolliphor EL matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kolliphor EL?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kolliphor EL.