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주요 문서

219916

Sigma-Aldrich

Hydroxy naphthol blue disodium salt

ACS reagent

동의어(들):

disodium;3-hydroxy-4-[(2-hydroxy-4-sulfonatonaphthalen-1-yl)diazenyl]-7-sulfonaphthalene-2-sulfonate

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크기 선택

5 G
₩59,784
100 G
₩292,422

₩59,784

출고 가능일2025년 4월 10일세부사항

벌크 견적 요청
모든 사진(2)

크기 선택

보기 변경
5 G
₩59,784
100 G
₩292,422

About This Item

Linear Formula:
C20H12N2O11S3Na2
CAS Number:
165660-27-5
Molecular Weight:
598.49
MDL number:
MFCD00058506
UNSPSC 코드:
12171500
PubChem Substance ID:
24853154
NACRES:
NA.47

₩59,784

출고 가능일2025년 4월 10일세부사항

벌크 견적 요청

Grade

ACS reagent

Quality Level

200

양식

powder, crystals or granules

기술

titration: suitable

pH

7.9

mp

274 °C

solubility

water: soluble

density

2.130 g/cm3

λmax

650 nm

적합성

passes test for determination of calcium

응용 분야

diagnostic assay manufacturing
hematology
histology

저장 온도

room temp

SMILES string

Oc1cc(c2ccccc2c1N=Nc3c(O)c(cc4cc(ccc34)S(=O)(=O)O[Na])S(=O)(=O)O[Na])S(O)(=O)=O

InChI

1S/C20H14N2O11S3.2Na/c23-15-9-16(35(28,29)30)13-3-1-2-4-14(13)18(15)21-22-19-12-6-5-11(34(25,26)27)7-10(12)8-17(20(19)24)36(31,32)33;;/h1-9,23-24H,(H,25,26,27)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2

InChI key

WPDDXLRAJOPBIR-UHFFFAOYSA-L

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관련 카테고리

일반 설명

Hydroxy naphthol blue disodium salt is a chemical compound belonging to the class of azo dyes commonly used as a pH indicator.It exists as small blue crystals. Hydroxy naphthol blue is suitable for the quantification of metal leaching in metal affinity chromatography. It changes color at pH range 12-13 from blue to reddish pink, in the presence of calcium ions and to deep blue in the presence of disodium ethylenediaminetetraacetic acid (EDTA).[1]

픽토그램

Exclamation mark
GHS07

신호어

Warning

유해 및 위험 성명서

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

가장 최신 버전 중 하나를 선택하세요:

시험 성적서(COA)

Lot/Batch Number
SHBS4239
SHBS4238
SHBR4697
SHBR4502
SHBQ2846

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특정 버전이 필요한 경우 로트 번호나 배치 번호로 특정 인증서를 찾을 수 있습니다.

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문서 라이브러리에서 최근에 구매한 제품에 대한 문서를 찾아보세요.

문서 라이브러리 방문

Food Chemicals Codex, Volumes 2-3
Food Chemicals Codex, 2-3 null

질문

1–2 / 2 질문  

  1. Does this product consist of having Hydroxy Naphthol Blue deposited on crystals of Sodium Chloride in the concentration of about 1%?

    1 답변

    1. Product 219916 is simply Hydroxy naphthol blue disodium salt. The dye is not deposited on crystals of sodium chloride. The product meets the specifications of the American Chemical Society and is suitability tested for calcium determination.

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  2. Can solutions of 219916 (Naphthol Blue disodium salt) be prepared in water and kept for several days at room temperature?

    1 답변

    1. Solution stability studies for products sold as dry dyes are not conducted. The stability of the solution can vary greatly, from being stable for several days, weeks, or even years to failing after a couple of days. It is advisable to prepare the solution fresh and use it on the day of testing. After 1 week, preparing another fresh solution is recommended. Running tests on the freshly prepared solution and previously prepared solutions can help determine their effectiveness over time. If there is any difference between the freshly prepared solution and solutions that were previously prepared, it would provide the necessary insights. This approach is commonly used in research and development to assess solution stability over time.

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