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- the fact that a substance is dirty or lower in quality because it is mixed with another substance, or something that causes this: Impurities are removed from the blood by the kidneys. The impurity of the water is a health risk.
dictionary.cambridge.org/dictionary/english/impurity
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Impurities in pharmaceutical substances are unwanted chemicals that remain with the active pharmaceutical ingredients (APIs) or develop during formulation or storage. These can affect the safety, efficacy, and stability of pharmaceutical products.
impurity. noun. /ɪmˈpjʊərəti/. /ɪmˈpjʊrəti/. (plural impurities) [countable] a substance that is present in small amounts in another substance, making it dirty or of poor quality. A filter will remove most impurities found in water. The substance is free of impurities. The water contains impurities which make it unsuitable for drinking.
Definition of impurity noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
1. : something that is impure or makes something else impure. removing impurities from water. 2. : the quality or state of being impure. Synonyms. adulterant. contaminant. contamination. defilement. pollutant. See all Synonyms & Antonyms in Thesaurus. Examples of impurity in a Sentence.
- Introduction
- Sources of Impurities
- Effect of Impurities
- Permissible Impurities in Pharmaceutical Substances
- Test For Purity
The substances that are used in pharmaceuticals should be pure enough to be used safely. It is rather difficult to obtain an absolutely pure substance. We find substances and chemicals, with varying degrees of purity. For example, substances like cane sugar (sucrose), dextrose, common salt and many inorganic salts are found with over 99% purity whi...
The type and amount of impurity present in chemicals or pharmaceutical substances depends upon several factors: Raw Material Employed in Manufacture: When substances or chemicals are manufactured, the raw materials from which these are prepared often contain impurities. These impurities get incorporated into the final product. Impurities like arsen...
It can be seen that, almost pure substances are difficult to get and that some amount of impurity is always present in the material. The impurities present in the substances may affect as follows: 1. Impurities which have a toxic effect can be injurious when present above certain limits. 2. Impurities, even when present in traces, may show a cumula...
Since it is not possible to avoid impurities, it is necessary to have substances that are reasonably pure. The pharmacopoeial committee takes the following points into consideration with respect to the problem caused by impurities in substances. 1. For impurities that are of harmful type:such as lead, arsenic, etc., a low permissible limit is presc...
Pharmacopoeias of various countries prescribe ‘tests for purity, for substances which are to be used for medical purposes. The so-called ‘tests for purity’ means detecting impurities in the substances and pharmacopoeias fix the limits of tolerance for these impurities. The governing factor for these tests is to determine how much impurity is likely...
the fact that a substance is dirty or lower in quality because it is mixed with another substance, or something that causes this: Impurities are removed from the blood by the kidneys. The impurity of the water is a health risk. SMART Vocabulary: related words and phrases. Dirt & untidiness.
Medical Definition of Impurity. 1. Origin: L. Impuritas: cf. F. Impurete. 1. The condition or quality of being impure in any sense; defilement; foulness; adulteration. "Profaneness, impurity, or scandal, is not wit."
