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Specification

Concerning Product:
Article number 122965439MEP
Trade name / designation / denomination Methylene Blue, PhEur.
CAS number 122965-43-9
Other names / synonyms•Azure II; •METHYLENE BLUE; •Methylene Blue; •Methylene Blue Hydrate; •Methylene Blue [Ion association reagent for spectrophotometric analysis]; •Methylene Blue hydrate; •Methylene Blue zinc chloride double salt; •Methylene Blue, w/v aq. soln.; •Methylene blue; •Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride, hydrate (1:1:?);
EC number602-909-3
Molecular weight [g / mol]337.867
FormulaC16H20ClN3OS


Parameter Specification Unit

Organoleptic test
Appearance dark blue or dark green crystalline powder with a metallic sheen, hygroscopic

Physical parameter
Loss on drying 8.0  –  24,0 %

Identity
Assay 93,0  –  102,0 %
Identification A. IR: The IR spectrum of the sample corresponds to the reference standard
Identification B. Chlorides: The filtrate gives reaction (2.3.1a) of chlorides

Impurities
Sulphated ash ≤ 0,25 %
Related substances Impurity A (3-(dimethylamino)-7-(methylamino)phenothiazin-5-ylium) : ≤ 5,0 %
Related substances Methylene violet ≤ 0,05 %
Related substances Total of impurities other than A ≤ 0,5 %
Related substances Unspecified impurities ≤ 0,10 %

Residual Solvents
Residual solvents Ethyl acetate: ≤ 5000 ppm

Elemental Impurities
Aluminium (Al) ≤ 100 ppm
Cadmium (Cd) ≤ 1 ppm
Chromium (Cr) ≤ 100 ppm
Copper (Cu) ≤ 300 ppm
Iron (Fe) ≤ 200 ppm
Mercury (Hg) ≤ 1 ppm
Manganese (Mn) ≤ 10 ppm
Molybdenum (Mo) ≤ 10 ppm
Nickel (Ni) ≤ 10 ppm
Lead (Pb) ≤ 10 ppm
Tin (Sn) ≤ 10 ppm
Zinc (Zn) ≤ 100 ppm

Organic volatile impurities
Benzene ≤ 2 ppm
Methanol ≤ 3000
Toluene ≤ 890 ppm

Microbiological data
Total Plate Count ≤ 100 CFU/g
Yeast and Mould ≤ 100 CFU/g


Chemische Werke Hommel GmbH & Co.KG
This document was generated electronically and is valid without signature.
Waltrop, 10. Aug. 2023
We only confirm that we took over the data from our supplier accordingly. Despite careful working, errors in the takeover are not totally excluded. Some or all parts off the document may be translated due to our best knowledge from the original to give a better understanding. If you have any questions about specific details, please call us directly. Unless otherwise marked, these data do not originate from us and have not been tested by us on the correctness. The above information corresponds to the present state of our knowledge and is intended as a general description of our products and their possible applications. We make no warranties, expressed or implied, as to the information's accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of our products for its particular application. The foregoing information does not absolve the buyer of its own tests. Observing existing laws and regulations, is the responsibility of the buyer of our product. Nothing included in this information waives any of our General Terms and Conditions of Sale, which control unless it agrees other in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing our products, are available upon request and are provided in compliance with applicable law. The user should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact us.


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