ERIOCHROME BLACK T ACS GRADE

Stains Indicator Reagents-69

ERIOCHROME BLACK T ACS GRADE

Part No. RXSOL-69-1787-617

Indicator for EDTA titration

ERIOCHROME BLACK T (ACS GRADE) Metal Titration Indicator

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Key details

Part number RXSOL-69-1787-617
Generic name Indicator for EDTA titration
Standard packing 100.00 Grams
Available pack sizes 50 Gram, 100 Gram, 500 Gram, 1 Kg DUAL SEALED pack.
Supply locations Other Valuable INDICATORS Alcian Blue 8 Gx Alizarin Red S Basic Fuchsin Bromo Thymol Blue Bromo Xylenol Blue Bromo Cresol Green Eosin Fluorescien Complexone Methyl Red Nitrazine Yellow Orcein Phenol red Safranine O Thymol Blue

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Application

<p style="text-align: justify;">
<span style="font-family: arial, sans-serif; font-size: small; text-align: justify;">Eriochrome black T is used as an indicator in analytical chemistry. </span><br style="font-family: arial, sans-serif; text-align: justify;" />
<span style="font-family: arial, sans-serif; font-size: small; text-align: justify;">It is also used in the detection of rare earth metals. It finds application in dyeing and printing of wool fabric, dyeing of silk and nylon as well as in leather dyeing. It can be used in the spectrophotometric determination of </span><span style="font-family: arial, sans-serif; text-align: justify; font-size: 14px;">diphenhydramine hydrochloride</span><span style="font-family: arial, sans-serif; font-size: small; text-align: justify;"> in phar</span><span style="font-family: arial, sans-serif; font-size: small; text-align: justify;">maceutical preparations. </span><br style="font-family: arial, sans-serif; text-align: justify;" />
<br style="font-family: arial, sans-serif; text-align: justify;" />
<span style="font-family: arial, sans-serif; font-size: small; text-align: justify;">As a complexometric indicator, it is useful in the determination of hardness of water.</span></p>

Using Procedure

<p>
Metal Titration Indicator<br />
<span style="font-family: arial, sans-serif; font-size: small;">water hardness determination process. It is an azo dye.</span><br />
<span style="font-family: arial, sans-serif; font-size: small;">Black Stains and Dyes and Indicators</span></p>

Technical Specifications
C.A.S. No. 1787-61-7
CI NO. 14645
M.F. C20H12N3NaO7S
M.W. 461.38gm/mole

Specifications:

Solubility 0.1 % (Dist. Water) Clear solution
Absorption Maximum (at pH 10.0 Ammonia Buffer + 2ml 0.05M E.D.T.A.) ?max 610-630nm
Absorptivity (A1%,1cm at ?max at pH10.0 Ammonia Buffer + 0.05M E.D.T.A.) >300
Loss On Drying (110°C) <1%
Suitability as indicator for Metal Titration Passes test
Remarks

<p>
<span style="font-family: arial, sans-serif; font-size: small;">CAS 1787-61-7,7647-14-5</span></p>

Note

Synonym :- 3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalene sulfonic acid, sodium salt

Suitability :- Passes (for complexometric determination of metals)

Color :- Brownish-black to black

Grade :- Pure

Physical Form :-Powder

Formula Weight:- 461.38

Infrared Spectrum:- Authentic

Solubility in water: slightly soluble

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