ERIOCHROME BLACK T AR-ACS

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ERIOCHROME BLACK T AR-ACS Specification

Ingredients
Principal ingredient: Eriochrome Black T indicator dye

Solubility
Soluble in water and ethanol

Molecular Weight
461.38 g/mol

Smell
Odorless

Storage
Store in a cool dry place away from moisture and direct sunlight

Density
Gram per cubic centimeter(g/cm3)

Purity
Approximately 95%

Molecular Formula
C20H12N3NaO7S

Ph Level
6.4-7.8 (in solution)

CAS No
1787-61-7

Properties
Stable under recommended conditions shows color change under different pH levels during titration

Shelf Life
2 years under proper storage conditions

EINECS No
217-250-3

Usage
Typically used to identify calcium magnesium and other metal ions in complexometric analysis.

Application
Used as an indicator in complexometric titrations

Taste
Not applicable or tasteless

Appearance
Dark violet or black powder

Physical Form
Powder

Structural Formula
C20H12N3NaO7S (see specific diagrams for full structural formula)

Grade
AR-ACS (Analytical Reagent - American Chemical Society standards)

HS Code
32050000

Poisonous
NO

Melting Point
190-200C (decomposes)

Shape
Amorphous powder

About ERIOCHROME BLACK T AR-ACS

Eriochrome Black T AR-ACS is a dark violet or black amorphous powder used as an indicator in complexometric titrations to identify calcium, magnesium, and other metal ions. With a purity of approximately 95%, this Analytical Reagent grade powder is soluble in water and ethanol, exhibiting stable properties under recommended conditions. Its molecular formula C20H12N3NaO7S and molecular weight of 461.38 g/mol make it ideal for precise titration procedures, where it shows distinct color changes at different pH levels. It has a shelf life of 2 years when stored correctly.