Microbiological effectiveness euxyl® K is equally effective against bacteria, yeasts and mould fungi. It is a typically biostatic product with the biocidal. Powerful preservative at low use levels; Fully effective in anionic, cationic and nonionic systems; Suitable for neutral pH rinse-off applications; Cost effective. euxyl. ®. K Preservative for cosmetics & toiletries. Liquid preparation based on Methylchloroisothiazolinone, Methylisothiazolinone and Benzyl Alcohol.

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Its use is permitted both in products that remain on the skin as well as in rinse-off products.

Euxyl K100 preservative 100ml

It acts even in very low useconcentrations and has good vapour phase effectiveness. For full INCI-declaration kindly contact us. Microbiological effectiveness euxyl K is equally effective against bacteria, yeasts and mould fungi. It is a typically biostatic product with the biocidal properties necessary for practical use.

For euxyl K to perform effectively in destroying or ganisms in products already contaminated, a minimum contact time of 48 hours is necessary. Since the effect of euxyl K takes place through chemical reactions with the microorganisms, when it is used in heavily contaminated products loss of active ingredient must be taken into account.

Good production hygiene, as well as the use of raw materials with low microorganism levels as a result of correct raw material control are of course vital prerequisites for the production of microbiologically faultless finished products. MIC values Determination of the minimum inhibitory concentration in the serial dilution test produced the following values: Burkholderia cepacia Enterobacter cloacae Escherichia coli Klebsiella pneumoniae Proteus mirabilis Pseudomonas aeruginosa Pseudomonas fluorescens Pseudomonas maltophilia Pseudomonas putida Pseudomonas stutzeri Gram-positive: Bacillus subtilis Brevibacterium ammoniagenes Staphylococcus aureus Streptococcus lactis Mould fungi: Aspergillus niger Aspergillus oryzae IAM 0.

The cultures are incubated for 48 hours at 37 C, except for Aspergillus niger, which is incubated for 72 hours at C. The evaluation exyl made on the basis of semi-quantitative assessment of the microbial growth of the streaks. For this, in various test series, the preservative to be tested is added in different concentrations to the unpreserved samples.

A constant microorganism load is achieved by means of periodic inoculation inoculation cycles of the eyxyl preparations. Immediately before inoculation, samples of the individual preparations are streaked out onto nutrient media.

The preservative effect is evaluated on the basis of the microorganism growth on the nutrient media. The longer the time to the occurrence of the first microbial growth, the more effective is the preservative.

Experience has shown that a well preserved product should remain growth-free for six inoculation cycles in order to ensure the shelf-life in the original packaging required in practice 30 months.

Please pay attention to the corresponding certificate.

The eeuxyl given are recommended guides. The individual use-concentration is dependent on the sensiti vity of the product to microbial contamination, the choice of raw materials and production hygiene.


The efficacy and optimum use-concentration should always be determined in the end product with the aid of a preservation load test i. All responsibility for determining the most effective percentage for a given use remains with the final eeuxyl manufacturer since the optimal use-concentration level will vary due to productspecific variables such as choice of raw materials, production hygiene, etc. Indications for use General Temperature stability euxyl K should in principle only be incorporated into the product to be preserved in the cooling phase at a temperature lower than 40 C.

euxyl® K by Schülke & Mayr GmbH – Personal Care & Cosmetics

In practice, adding euxyl K together with the fragrance has proved effective. Emulsions In practice, emulsions are preserved with 0. Products which contain proteins, caseins, fresh cell extracts, repair complexes, or similar, must in principle contain a higher proportion of preservative.

For other uses please contact us. Chemical compatibility In general, it is possible for interactions to occur between various active ingredients and auxiliary substances in cosmetic formulations. Thus certain incompatibilities of euxyl K with other ingredients have been established and are listed below. General euxyl K is fully effective both in anionic as well as cationic and non-ionic systems. Acidic ph values have no negative influence on the effectiveness. Compatibility with surfactants euxyl K proved to have good compatibility with an ionic surfactants such as sulphates, ether sulphates and sulphosuccinates, as well as with non-ionogenic surfactants.

Compatibility with sulphite ions euxyl K is inactivated by sulphite ions. Product-specific properties Material compatibility Concentrate In the material compatibility tests with the concentrate of euxyl K stainless steel, hard polyvinyl chloride hard PVCpolyethylene PEpolystyrene PS and polycarbonate PC proved to be suitable materials for handling the undiluted product.

Other metallic materials and especially polymethylmethacrylate PMMA should not be used. Soft polyvinyl chloride soft PVC e. Other sealing materials could lead to severe swelling or to pronounced discolouration of euxyl K Dilutions The behaviour of euxyl K in 0. No incompatibilities with plastics have been observed with products preserved with euxyl K Please check the compatibility in individual cases.

Effect on surface tension The surface tension of water is slightly reduced by the addition of euxyl K Foaming behaviour In the foaming test in accordance with DINa 0. Solubility In water euxyl K is only limitedly soluble. In the polar solvents such as 1,2-propylene glycol, glycerol, triethylene glycol, 2-phenoxyethanol euxyl K is unlimitedly soluble. In non-polar solvents it is only limitedly soluble, in pure hydrocarbons it is practically insoluble. Storage We recommend storing in the original container at room temperature.

The kg containers are affiliated to a recycling system that guarantees free pickup and sensible utilisation of used containers throughout Europe. The labels are made of PE. Our packaging materials contain no PVC and are recyclable.

It is the responsibility of the final product manufacturer to assure that claims made for the final product are in conformance with all applicable local laws. In other respect our Conditions of Sale and Supply apply.


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euxyl K 100 Preservative for cosmetics & toiletries

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Euxyl K preservative ml – Fun With Soap

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