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CAS NO 2243-76-7 Mordant Orange 1 Powder

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CAS NO 2243-76-7 Mordant Orange 1 Powder

CAS NO 2243-76-7 Mordant Orange 1 Powder
CAS NO 2243-76-7 Mordant Orange 1 Powder CAS NO 2243-76-7 Mordant Orange 1 Powder

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Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB077
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 1kg/Bottle, 5-25kg/Drum
Delivery Time: 5-8 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 10Ton/Month

CAS NO 2243-76-7 Mordant Orange 1 Powder

Product Name: Mordant Orange 1 Cas No: 2243-76-7
Molecular Formula: C13H9N3O5 EINECS: 218-818-3
Purity: 99% Solubility: 1 N NH4OH: 1%, Clear
Application: Diagnostic Assay Manufacturing Hematology Histology Storage Temp.: Room Temp
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Mordant Orange 1 Powder


2243-76-7 Biological Buffers

CAS NO 2243-76-7 Mordant Orange 1 powder

1:Can I get some samples before bulk order?
A: Most products provide free samples, but the shipping cost be paid by customers.
2: What's your MOQ?
A: We can have a discussion.
3: Which kind of payment terms do you accept?
A: PI will be sent first after confirmation of order,enclosed our bank information.Payment by T/T, Western Union,D/P, ETC.
4.How to place an order?
A: You can contact me through Trademanager, WhatsApp, Email and other contact methods, tell me the product and quantity you need, and then we will give you a quote.
5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.



1. 90days quality guarantee for exchange.

2. For each batch order extracts, we will attach a factory Inspection Report with the goods delivery , including the BatchNo/ Date/ Test index ects; also will keep the archived extracts to ensure received by customers are the same each time.

3. Our team of experienced professionals are available online 24 hours a day to answer any questions and provide guidance on product usage and maintenance.


Product Name: Mordant Orange 1
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
Mordant Orange 1 Structure
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
CAS DataBase Reference 2243-76-7(CAS DataBase Reference)
EPA Substance Registry System Benzoic acid, 2-hydroxy-5-[(4-nitrophenyl)azo]- (2243-76-7)
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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