70956-30-8

Basic information

• Product Name: Solvent Red 146
• Synonyms: C.I.Solvent Red 146;C.I.Solvent Red 218;Solvent Red FB
• CAS NO: 70956-30-8
• Molecular Formula: C20H13NO4
• Molecular Weight: 331.32152
• Product Categories: Solvent Dyestuff
• Mol File: 70956-30-8.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Solvent Red 146(CAS DataBase Reference)
• NIST Chemistry Reference: Solvent Red 146(70956-30-8)
• EPA Substance Registry System: Solvent Red 146(70956-30-8)

Safety Data

• Hazardous Substances Data: 70956-30-8(Hazardous Substances Data)

Usage

Preparation

N-(3-amino-4-methoxyphenyl)benzamide diazotization, and N-(4-chloro-2-methoxyphenyl)-3-hydroxy-1-naphthamide coupling.

Properties and Applications

blue light red. Used for thermoplastic resin coloring. Standard Light Fastness Heat-resistant(℃) water Sodium Carbonate(5%) Hydrochloric acid(5%) Melting point Stable ISO Excellent 200 Insoluble No change No change

Standard

Light Fastness

Melting point

Stable

ISO

Excellent

Upstream product

• 108-95-2 phenol 
• 116-82-5 1-amino-2-bromo-4-hydroxyanthraquinone 

Downstream Products

• 55880-50-7 N-[2-(1-Amino-4-hydroxy-9,10-dioxo-9,10-dihydro-anthracen-2-yloxy)-ethyl]-N-(2-hydroxy-ethyl)-4-methyl-benzenesulfonamide 
• 35712-58-4 1-anilino-2,4-dihydroxy-anthraquinone 
• 76411-70-6 1-azido-2-phenyloxy-4-hydroxyanthraquinone 

Relevant articles and documents

Disperse red 60 condensation process

The invention relates to the technical field of dyes, in particular to a disperse red 60 condensation process. The process comprises the following steps: in a condensation kettle, firstly adding phenol and a 1-amino-2-bromo-4-hydroxyanthraquinone dry product, then adding sodium carbonate and a catalyst, heating to 140-160 DEG C, carrying out reactions at a constant temperature; after the reactionis finished, cooling to 90-100 DEG C, adding water within the temperature range, dropwise adding liquid caustic soda, cooling to 50-55 DEG C after dropwise adding is finished, filtering, cleaning, anddrying to obtain 1-amino-2-phenoxy-4-hydroxyanthraquinone, namely disperse red 60. According to the process, a condensed acid-binding agent (potassium carbonate) is directly substituted by sodium carbonate with a lower price, and a certain amount of a proper phase transfer catalyst is added, so that the contact probability and activity of condensation reactions are improved, the aims of improvingthe product quality and yield and reducing the production cost are fulfilled, and the cost of the disperse red 60 can be reduced by 1500 yuan/ton.

Order Parameters of β-Substituted Anthraquinone Dyes I: 1-Amino-4-Hydroxyanthraquinone Derivatives

A study is presented of the optical order parameters and spectroscopic properties of 1-amino-4-hydroxyanthraquinone derivatives containing various substituents in the 2-position in a nematic liquid crystalline mixture composed of cyanophenylcyclohexane derivatives.The results are discussed in terms of the effects of the dye structure on the order parameters.By introducing a -SCH2- group into the 2-position, magneta dyes have been obtained which show high order parameters and solubilities.In addition, preliminary data on the solubility and photostability of the dyes are reported.