insect repellent definition chemistry

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Insect repellent - definition of insect repellent by The ...- insect repellent definition chemistry ,Define insect repellent. insect repellent synonyms, insect repellent pronunciation, insect repellent translation, English dictionary definition of insect repellent. Noun 1. insect repellent - a chemical substance that repels insects insect repellant, insectifuge repellant, repellent - …OFF, an Insect Repellent Lab report - OFF An Insect ...OFF, An Insect Repellent Author: Nikhita Pakki Instructor: Bobbi Anglin Section: 5 Date Lab Performed: October 30, 2012 Date Report Submitted: November 6,2012 Abstract: In this lab, OFF, the objective was to synthesize N,N-diethyl m- toluamide, an insect repellent. This is done by performing an acid chloride reaction with an amine and using the techniques of extraction to obtain the product.



Repellent activity of catmint, Nepeta cataria, and iridoid ...

The repellent activity of the essential oil of the catmint plant, Nepeta cataria (Lamiaceae), and the main iridoid compounds (4aS,7S,7aR) and (4aS,7S,7aS)-nepetalactone, was assessed against (i) major Afro-tropical pathogen vector mosquitoes, i.e. the malaria mosquito, Anopheles gambiae s.s. and the Southern house mosquito, Culex quinquefasciatus, using a World Health Organisation (WHO ...

(PDF) Mosquito repellents: A review of chemical structure ...

as an insect repellent by Gertler in 1946 (US Patent 2,408,389), while the first report of mosquito repellency to ortho -, meta -a n d para - N , N -diethyltoluamide isomers was made by McCabe et ...

Signaling Science: What Household Solutions Repel Ants ...

Jun 28, 2012·Chemistry Chemical signals Entomology Repellents Introduction ... • Test a solution on an ant by dipping a Q-tip into the solution and drawing a circle around the insect…

and Cooling Compounds as Insect Repellents

Jun 08, 2018·Questice ® (menthyl pyrrolidone carboxylate) has also been patented as an insect repellent (Watkins, et al., United States Patent 6,451,844, September 17, 2002) and Kalbe and Nentwig in German Patent No. 19840321 describe the use of menthyl lactate or menthol glycerol acetal for repelling mites and other insects.

Effective Insect Repellent Formulation in both ...

Jun 23, 2009·Effective Insect Repellent Formulation in both Surfactantless and Classical Microemulsions with a Long‐Lasting Protection for Human Beings Jeremy Drapeau University of Regensburg, Institute of Physical and Theoretical Chemistry, Universitätstraße 31, D‐93053 Regensburg, (phone: +49‐941‐9434044; fax: +49‐941‐9434532)

Citronella as an Insect Repellent in Food Packaging ...

Of five commercial plant extracts (citronella, garlic oil, neem extract, pine oil, and pyrethrum), citronella was found to be effective in deterring the infestation of cartons containing muesli and wheat germ by red flour beetles. The chemical components were applied as part of a coating on the carton board. In an experimental set up that accelerates infestation over a 2 week period ...

DEET Technical Fact Sheet

DEET is an insect and acarid repellent. The International Union of Pure and Applied Chemistry (IUPAC) name for DEET is N,N-diethyl-m-toluamide and other isomers, and it is a member of the N,N-dialkylamide family of chemicals. The Chemical Abstracts Service (CAS) registry number for DEET …

The Chemistry of Insect Repellents – Compound Interest

Jul 14, 2014·The Chemistry Of Insect Repellents There are a number of different chemicals that are responsible for the repellent effects of the various sprays or creams available — and chemistry can also offer possible explanations for why some people are just that much more attractive to the humble mosquito than others.

Insect repellents Repulsive chemistry

chemistry Simon Hadlington discovers why some people get bitten by more insects than others, and how new chemical deterrents are helping fight them off In short Studying what chemical cues biting insects use to avoid certain people is leading to new families of repellents Molecules that attract biting insects are being

Comparative Efficacy of Insect Repellents against Mosquito ...

Thousands of plants have been tested as potential botanical sources of insect repellent. 23-25 Most plant-based insect repellents currently on the market contain essential oils from one or more of ...

Insect Repellent - an overview | ScienceDirect Topics

F. Salaün, in Active Coatings for Smart Textiles, 2016 9.5.5 Insect repellent. Insect repellent compounds used in textile finishes are either synthetic chemicals such as DEET (N,N-diethyl-3-methylbenzamide), picaridin (1-piperidinecarboxylic acid 2-[2-hydroxyethyl]-1-methlypropylester) or permethrin, or natural products (essential oils) such as citronella, neem, lemon and eucalyptus.

Efficacy of Some Commercially Available Insect Repellents ...

The most widely used insect repellent, DEET (N,N-diethyl-m-toluamide), has been in use for about 70 yr. DEET is considered a very safe repellent ( Osimitz and Grothaus 1995, Koren et al. 2003, Sudakin and Trevathan 2003). Nevertheless, fear of possible side effects of DEET and general chemophobia has resulted in the development of a multitude ...

Chemical composition, larvicidal evaluation, and adult ...

The larvicidal and repellent activities of the analyzed essential oils were tested on Culex pipiens larvae and adults, respectively. Additionally, the main metabolite of the essential oils, p-cymene was tested against C. pipiens adults in order to define the affiliation between p-cymene and the repellent …

Citriodiol, a natural active ingredient for insect ...

Citriodiol® is available to all those that require a naturally sourced active ingredient for an insect repellent product; Citriodiol®’s main constituent is p-menthane-3,8-diol or PMD, which is naturally present in eucalyptus citriodora oil, but its levels are increased by our production process

Lab 9: SODIUM HYPOCHLORITE OXIDATION ... - Chemistry

powders and explosives, as an insect repellent, and for medicinal purposes (you will recognize the characteristics odor of Vicks). Borneol, one of the stereoisomeric related alcohols, is found in certain trees of Borneo, and isoborneol, used in today's experiment, is made commercially from pinenes (the C 10 hydrocarbons of turpentine).

Could catnip become the new insect repellent? -- ScienceDaily

Mar 04, 2021·Modern formulations of insect repellents such as DEET target mosquito odor and taste receptors, rendering the insect incapable of recognizing the chemical cues that signal a human prey.

Repellant - definition of repellant by The Free Dictionary

Define repellant. repellant synonyms, repellant pronunciation, repellant translation, English dictionary definition of repellant. also re·pel·lant adj. 1. ... especially insects: a repellent spray. n. Something that repels, especially: ... (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite ...

The Inorganic Insecticides

as Insecticides, Miticides, and Repellents at the Orlando, Fla., Laboratory, April 1942 to April 1947, 1947; E-802, A Digest of In- formation on Toxaphene, by R. C. Roark. 1950. In Advances in Chemistry, volume i: Organic Phosphorus Insecticides, by S. A. Hall, pages 150-159; Alkali-Stable ^ Poly- chloro Organic Insect Toxicants, Aldrin and

Could catnip become the new insect repellent? -- ScienceDaily

Mar 04, 2021·Modern formulations of insect repellents such as DEET target mosquito odor and taste receptors, rendering the insect incapable of recognizing the chemical cues that signal a human prey.

Mosquito Repellent | Encyclopediaom

Mosquito Repellent. More than one-third of the U.S.population uses aDEET-based insect repellenteach year. A mosquito repellent is a substance designed to keep away mosquitoes, thereby preventing them from biting humans and feeding on human blood.

A REVIEW ON NATURAL INSECT REPELLENT

Dec 12, 2016·DEFINITION A Natural insect repellant is a spray or lotion, applied to the skin for the prevention of mosquito bite.Natural mosquito repellents were preferred over chemical mosquito repellants. 3. HISTORY The Insect repellants are used from the ancient period. Different types of plant oils were used to kill insecticides.

Signaling Science: What Household Solutions Repel Ants ...

Jun 28, 2012·Chemistry Chemical signals Entomology Repellents Introduction ... • Test a solution on an ant by dipping a Q-tip into the solution and drawing a circle around the insect…

Insect Repellent - an overview | ScienceDirect Topics

R. Paul, in Functional Finishes for Textiles, 2015 1.4.1 Insect repellent finishes. Insect repellent textiles protect human beings from the bite of mosquitoes, thereby offering safety from mosquito borne diseases such as malaria, dengue, etc., which are serious public health problems in tropical regions. Among the various insect repellent chemicals, DEET is extensively used and has the ability ...

Repellent definition and meaning | Collins English Dictionary

Mar 13, 2021·Repellent definition: If you think that something is horrible and disgusting you can say that it is repellent . | Meaning, pronunciation, translations and examples