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Mordant Orange 1

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Mordant Orange 1 Basic information

Product Name:
Mordant Orange 1
Synonyms:
  • MORDANT ORANGE 1
  • P-NITROBENZENEAZOSALICYLIC ACID SODIUM SALT
  • ORANGE R
  • TIMTEC-BB SBB008990
  • SODIUM P-NITROBENZENEAZOSALICYLATE
  • SODIUM 5-(P-NITROPHENYLAZO)SALICYLATE
  • synchromateorangeaor
  • terracotta2rn
CAS:
2243-76-7
MF:
C13H9N3O5
MW:
287.23
EINECS:
218-818-3
Product Categories:
  • Azo
  • Analytical Chemistry
  • Indicator (pH)
  • pH Indicators
Mol File:
2243-76-7.mol
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Mordant Orange 1 Chemical Properties

Melting point:
250°C
Boiling point:
429.53°C (rough estimate)
Density 
1.3681 (rough estimate)
refractive index 
1.5600 (estimate)
solubility 
Soluble in water, ethanol; slightly soluble in acetone
form 
powder
Colour Index 
14030
pka
11.2(at 25℃)
color 
Orange-brown
PH Range
10(Yellow)-12(Violet)
Water Solubility 
SOLUBLE
λmax
385nm
Merck 
14,255
BRN 
962365
Major Application
Display device, photoresist, nanoparticles, sensors, image-recoring materials, photoconductive materials, photography, electrorheological materials, copying materials, optical engineering applications, monitoring oil degradation, lubricant, flame luminosity enhancing agent, coloring zinc, method for polymerization of vinyl chloride, determination of OH groups on resins, cosmetics, diapers, food storage, measurement of acidity injuice, assay for aldehyde contents, determination of albumin, agent for plaque, method for counting leukocytes, antifungal agent
InChIKey
ZHFPEICFUVWJIS-BGWNKZQTSA-M
CAS DataBase Reference
2243-76-7(CAS DataBase Reference)
EPA Substance Registry System
Benzoic acid, 2-hydroxy-5-[(4-nitrophenyl)azo]- (2243-76-7)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
22-36
Safety Statements 
24/25-26
WGK Germany 
3
RTECS 
VO5310000
HS Code 
32041200

MSDS

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Mordant Orange 1 Usage And Synthesis

Chemical Properties

brown powder

Preparation

4-Nitrobenzenamine diazotization, and 2-Hydroxybenzoic acid?coupling.

Properties and Applications

dark yellow orange and brown. Dye soluble in water and Etanol be golden yellow, slightly soluble in Acetone and Cellosolve, insoluble in other organic solvent. In concentrated sulfuric acid to red light yellow, shallow green light yellow after diluted produce precipitation; In concentrated nitric acid for yellow to amber solution. Dye aqueous solution to join concentrated hydrochloric acid have green yellow precipitation; Add Sodium hydroxide solution for red wheat brown. Mainly used for wool, silk, nylon dyeing, also can be in wool and silk printing. Can also be used in electrochemical silver, biological coloring and indicator, wall paper and leather tinting.

Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 2 4 4 1-2 5 4-5 4-5
AATCC Dry 2,wet 5 4 4 4 4 3-4

Purification Methods

The free acid is precipitated by adding HCl to an aqueous solution of the Na salt. After 2 recrystallisations from aqueous AcOH, it has m 255o(dec); [m 253-254o(dec) was reported by Hewitt & Fox J Chem Soc 79 49 1901]. The free acid recrystallises from dilute AcOH as orange brown needles. The Na salt changes colour from yellow to red when the pH is increased from 10.2 to 12.0. [Woodland et al. J Am Chem Soc 75 5835 1953, Beilstein 16 IV 372.]

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