15905-32-5 Usage
Description
ERYTHROSIN B is an orange-red fine powder that is soluble in water, producing a cherry red color. It exhibits properties such as light fastness and heat resistance, making it a versatile compound with various applications across different industries.
Uses
Used in Analytical Chemistry:
ERYTHROSIN B is used as an indicator in analytical chemistry, taking advantage of its color-changing properties in response to different chemical environments.
Used in Food Industry:
ERYTHROSIN B is used as a red coloring agent in the food industry, specifically for products like cherries and fish. Its vibrant color enhances the appearance of these foods, making them more appealing to consumers.
Used in Printing Industry:
In the printing industry, ERYTHROSIN B is utilized as a component in printing inks, thanks to its intense color and stability.
Used in Dental Industry:
ERYTHROSIN B serves as a dental plaque disclosing agent, helping to identify areas of plaque buildup in the mouth for better oral hygiene.
Used in Biotechnology:
As a biological stain, ERYTHROSIN B is employed in biotechnology for staining and visualizing specific structures or cells.
Used in Medical Imaging:
ERYTHROSIN B finds application as a radiopaque medium, aiding in medical imaging procedures by providing contrast between different tissues.
Used in Photography:
It is used as a sensitizer for orthochromatic photographic films, enhancing the film's sensitivity to light and improving image quality.
Used in Cake Decoration:
ERYTHROSIN B is utilized in cake-decorating gels, adding a vibrant red color to various decorative elements on cakes.
Used in Confectionery:
In the confectionery industry, ERYTHROSIN B is used in the production of sweets such as candies and popsicles, providing a visually appealing color to these treats.
Used in Fluorescence Lifetime Imaging:
ERYTHROSIN B has been employed as a dye in fluorescence lifetime imaging, a technique used to study the dynamics of biological systems and materials.
Used in Cosmetics Coloring:
ERYTHROSIN B is also used in the cosmetics industry for coloring various products, capitalizing on its stable and intense color properties.
Chemical Properties:
ERYTHROSIN B is an orange-red fine powder with good light fastness and heat resistance. It is soluble in water, producing a cherry red color, and does not exhibit fluorescence. In concentrated sulfuric acid, it appears as a brown light yellow color, which changes to brown light yellow upon dilution and precipitation. When sodium hydroxide is added to its aqueous dye solution, it results in a soluble precipitation.
Preparation
Fluorescein (C.I.Acid Yellow 73, C.L 45350) in aqueous solution or Tetraiodide in ethanol, and made ??the free acid form.
Biochem/physiol Actions
Erythrosin B, also called as eosin B, is a xanthene dye. It belongs to the family of fluorescein dyes. It plays a major role in inhibiting dopamine uptake and high affinity 3H-ouabain binding and ion transport in synaptosomes from rat caudate nucleus.
Standard
Light Fastness
Melting point
Stable
ISO
Poor
Check Digit Verification of cas no
The CAS Registry Mumber 15905-32-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,0 and 5 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 15905-32:
(7*1)+(6*5)+(5*9)+(4*0)+(3*5)+(2*3)+(1*2)=105
105 % 10 = 5
So 15905-32-5 is a valid CAS Registry Number.
15905-32-5Relevant articles and documents
Technique for preparing erythrosin B
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Paragraph 0041; 0042; 0043; 0047, (2017/04/19)
The invention discloses a technique for preparing erythrosin B. The technique comprises the steps of 1, making fluorescein which serves as the start material react with iodate to generate erythrosine under the action of a solvent and a catalyst; 2, making the erythrosine prepared in step 1 react with alkali to generate the erythrosine B under the action of a solvent. The technique has the advantages that operation is easy, cost is low, yield is high, pollution is light, and iodine utilization rate is high. The technique is suitable for industrial production and is suitable for production of most relevant enterprises.
Assay for mycobacterium avium/intracellulare nucleic acid
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, (2010/12/26)
Disclosed is a method for determining the presence of Mycobacterium avium complex nucleic acids in a biological sample. In particular, the mig gene of M. avium and the DT1 gene of M. intracellulare are detected, preferably following amplification. In addition, the method distinguishes between species of M. avium and M. intracellulare. Also described are oligonucleotides that can be used as primers to amplify target genes such as mig and DT1 genes and as probes as well as kits containing the oligonucleotides.
PROCESS FOR SYNTHESIZING HALOGENATED DERIVATIVES OF FLUORESCEIN FOR USE IN THE PRODUCTION OF NON-VOLATILE MEMORY DEVICES
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Page/Page column 7, (2008/06/13)
A process performs solid phase synthesis of halogenated derivatives of fluorescein, and includes reacting fluorescein with a halide MX, wherein M is an alkali metal and X is a halogen, and Oxone? (2 KHSO5.KHSO4.K2SO4), at a temperature higher than or equal to 150° C. A structure uses a halogenated derivative of fluorescein selected from the group consisting of 2′,4′,5′-trichlorofluorescein, 2′,4′,5′,7′-tetrachlorofluorescein, 4′,5′-diiodofluorescein diacetate and 2′,4′,5′-triiodofluorescein as electro-bistable material in a non-volatile memory device.
