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CAS

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33340-36-2

Acid orange 16 (C.I. 16011) is a red light orange dye that is soluble in water, ethanol, and strong sulfuric acid, and insoluble in benzene. It exhibits different colors in various solutions, such as orange-red in water, orange in ethanol, red in strong sulfuric acid, and yellow in red nitric acid solution. In water solution, the addition of strong hydrochloric acid results in an orange-red color, while the addition of thick sodium hydroxide solution produces a palm orange color.

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  • 33340-36-2 Structure

  • Basic information

    1. Product Name: Acid orange 16 (C.I. 16011)
    2. Synonyms: Acid orange 16 (C.I. 16011)
    3. CAS NO:33340-36-2
    4. Molecular Formula: C17H14 N2 O4 S . Na
    5. Molecular Weight: 0
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 33340-36-2.mol

  • Chemical Properties

    1. Melting Point: N/A
    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. CAS DataBase Reference: Acid orange 16 (C.I. 16011)(CAS DataBase Reference)
    10. NIST Chemistry Reference: Acid orange 16 (C.I. 16011)(33340-36-2)
    11. EPA Substance Registry System: Acid orange 16 (C.I. 16011)(33340-36-2)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 33340-36-2(Hazardous Substances Data)

33340-36-2 Usage

Uses

Used in Textile Industry:
Acid orange 16 (C.I. 16011) is used as a dye for wool and silk fiber dyeing due to its ability to produce vibrant colors and its solubility in water.
Used in Paper Industry:
Acid orange 16 (C.I. 16011) is used as a dye for paper coating and printing inks, providing a bright orange color for various applications.
Standard:
Acid orange 16 (C.I. 16011) has been tested for various fastness properties, including light fastness, soaping, perspiration fastness, oxygen bleaching, and fastness to seawater. The ISO ratings for these properties are as follows:
Light Fastness: 4
Soaping: 3
Perspiration Fastness: 3
Oxygen Bleaching: 4
Fastness to Seawater: 2
These ratings indicate the dye's performance and durability in different conditions, making it suitable for various applications.

Preparation

m-Toluidine , p-Methylaniline,O-Methylaniline?mixed diazotization, and 6-Hydroxynaphthalene-2-sulfonic acid coupling.

Standard

Light Fastness

Fading

Stain

ISO

4

Check Digit Verification of cas no

The CAS Registry Mumber 33340-36-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,3,4 and 0 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 33340-36:
(7*3)+(6*3)+(5*3)+(4*4)+(3*0)+(2*3)+(1*6)=82
82 % 10 = 2
So 33340-36-2 is a valid CAS Registry Number.
InChI:InChI=1/C17H14N2O4S.Na/c1-11-4-2-3-5-15(11)18-19-17-14-8-7-13(24(21,22)23)10-12(14)6-9-16(17)20;/h2-10,20H,1H3,(H,21,22,23);/q;+1/p-1

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