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4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid, also known as Solvent Orange 1 or C.I. 13065, is an organic compound with the chemical formula C24H18N4O8S2. It is a synthetic azo dye characterized by its orange color and is widely used in various applications, including as a colorant in the textile, paper, and leather industries. 4,4'-bis[(4-hydroxyphenyl)azo]stilbene-2,2'-disulphonic acid is known for its high solubility in water and its ability to form strong, vibrant colors. It is also used as a pH indicator, changing color in response to changes in acidity or alkalinity. Due to its chemical structure, it is a disulfonated stilbene derivative, which contributes to its solubility and reactivity. However, it is important to note that the use of such chemicals may be subject to regulations due to potential environmental and health concerns.

91-34-9

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91-34-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91-34-9 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 91-34:
(4*9)+(3*1)+(2*3)+(1*4)=49
49 % 10 = 9
So 91-34-9 is a valid CAS Registry Number.

91-34-9SDS

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 5-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-[2-[4-[2-(4-oxocyclohexa-2,5-dien-1-ylidene)hydrazinyl]-2-sulfophenyl]ethenyl]benzenesulfonic acid

1.2 Other means of identification

Product number -
Other names Direct Yellow 4 dye

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:91-34-9 SDS

91-34-9Upstream product

91-34-9Downstream Products

91-34-9Relevant academic research and scientific papers

Insecticide evaporator comprising a stabilizer

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, (2008/06/13)

Insecticide evaporator comprising at least one volatile phosphoric ester insecticide, an agent for stabilizing the said ester against decomposition by protonization and used in an amount of 0.2 to 20% based on the weight of phosphoric ester, characterized in that the stabilizing agent contains at least one compound selected from the compounds of the chemical class of 1,3-benzodioxoles and at least one diazene.

Evaporator system comprising a stabilized pesticidal phosphoric acid ester and method for stabilizing such ester enclosed in an evaporator

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, (2008/06/13)

An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.

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