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63721-83-5

Xylenol Orange sodium salt, also known as sodium 2-(3,5-dibromo-2-pyridylazo)-5-(N-ethyl-N-(3-sulfophenyl))phenol, is a water-soluble, orange-colored azo dye used as a pH indicator and complexometric titrant. It is commonly employed in analytical chemistry for the determination of metal ions, particularly in the titration of calcium and magnesium ions in water samples. The compound exhibits a color change from yellow to red at a pH range of 4.2 to 5.8, making it a valuable tool for acid-base titrations and metal ion analysis. Xylenol Orange sodium salt is also used in the pharmaceutical industry for the determination of endotoxins and in various other applications where precise pH control or metal ion detection is required.

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  • 63721-83-5 Structure

  • Basic information

    1. Product Name: Xylenol Orange sodium salt
    2. Synonyms: O-CRESOLSULFONPHTHALEINDI-(METHYL-IMINODIACETIC ACID) SODIUM SALT;XYLENOL ORANGE SODIUM SALT;XYLENOL ORANGE, WATER SOLUBLE;XYLENOL ORANGE;XYLENOL ORANGE TETRASODIUM;Xylenol Orange sodium salt, 0.1% w/v aq. soln.;o-Cresolsulfonphthalein-3μ-3-bis(methyliminodiacetic acid sodium salt);Two cresol orange indicator
    3. CAS NO:63721-83-5
    4. Molecular Formula: C31H31N2NaO13S
    5. Molecular Weight: 694.64
    6. EINECS: 216-553-8
    7. Product Categories: N/A
    8. Mol File: 63721-83-5.mol

  • Chemical Properties

    1. Melting Point: 195 °C (dec.)(lit.)
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: /
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. PKA: pK2:2.58(-1);pK3:3.23(-2);pK4:6.37(-3);pK5: 10.46(-4);pK6: 12.28(-5) (25°C)
    10. CAS DataBase Reference: Xylenol Orange sodium salt(CAS DataBase Reference)
    11. NIST Chemistry Reference: Xylenol Orange sodium salt(63721-83-5)
    12. EPA Substance Registry System: Xylenol Orange sodium salt(63721-83-5)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: 22-24/25
    4. WGK Germany: 3
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 63721-83-5(Hazardous Substances Data)

63721-83-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 63721-83-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,7,2 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 63721-83:
(7*6)+(6*3)+(5*7)+(4*2)+(3*1)+(2*8)+(1*3)=125
125 % 10 = 5
So 63721-83-5 is a valid CAS Registry Number.

63721-83-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name Xylenol Orange Sodium Salt

1.2 Other means of identification

Product number -
Other names Xylenol Orange sodium salt

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:63721-83-5 SDS

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