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539-44-6 Usage

General Description

P-tolyl-hydrazine is a chemical compound with the formula C7H10N2. It is a colorless to pale yellow liquid with a strong odor, and it is highly flammable. P-tolyl-hydrazine is primarily used in the synthesis of pharmaceuticals and agrochemicals. It is also utilized in the manufacture of dyes, pigments, and other organic compounds. P-tolyl-hydrazine is known to be a hazardous substance, as it may cause skin and eye irritation upon contact, and prolonged exposure can lead to respiratory and nervous system effects. It is important to handle and store p-tolyl-hydrazine with care to prevent any potential health and safety risks.

Check Digit Verification of cas no

The CAS Registry Mumber 539-44-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,3 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 539-44:
76 % 10 = 6
So 539-44-6 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017


1.1 GHS Product identifier

Product name 4-Methylphenylhydrazine

1.2 Other means of identification

Product number -

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:539-44-6 SDS

539-44-6Relevant articles and documents

Visible-light-mediated phosphonylation reaction: formation of phosphonates from alkyl/arylhydrazines and trialkylphosphites using zinc phthalocyanine

Hosseini-Sarvari, Mona,Koohgard, Mehdi

supporting information, p. 5905 - 5911 (2021/07/12)

In this work, we developed a ligand- and base-free visible-light-mediated protocol for the photoredox syntheses of arylphosphonates and, for the first time, alkyl phosphonates. Zinc phthalocyanine-photocatalyzed Csp2-P and Csp3-P bond formations were efficiently achieved by reacting aryl/alkylhydrazines with trialkylphosphites in the presence of air serving as an abundant oxidant. The reaction conditions tolerated a wide variety of functional groups.

Synthesis method of oxalyl hydrazine ligands and application of oxalyl hydrazine ligands in C-N bond coupling reaction


Paragraph 0020; 0024-0029, (2020/11/02)

The invention belongs to the technical field of organic chemical synthesis, and particularly relates to a synthesis method of oxalyl hydrazine ligands and application of the oxalyl hydrazine ligands to C-N coupling reaction. The invention provides a method for synthesizing oxalyl hydrazine ligands by taking hydrazine compounds and oxalyl chloride as raw materials. The method has the advantages that the raw materials are easy to obtain, the operation is simple, the post-treatment is easy, and the method is suitable for industrial large-scale production; furthermore, coupling of aryl iodide andhydrazine hydrate is realized by utilizing oxalyl hydrazine ligands, and aryl hydrazine is synthesized. The method is mild in reaction condition, safe, efficient and suitable for industrial production.

Preparation method of 4-methyl phenylhydrazine hydrochloride


Paragraph 0017-0024; 0030; 0032; 0034; 0040; 0042; 0044, (2018/07/30)

The invention relates to a preparation method of 4-methyl phenylhydrazine hydrochloride. The preparation method comprises the following steps: diazotization, reduction, purification and salt formation. In the diazotization and reduction steps, reaction liquid is kept with high acidity by means of concentrated hydrochloric acid, so that the reaction is smoothly and fully carried out. In the reduction step, zinc powder-concentrated hydrochloric acid is taken as a reducing agent to replace sodium thiosulfate, sodium hydrogen sulfite, stannous chloride-hydrochloric and the like, the reducing property is good, the yield is high, the reaction time is shortened, impurities such as zinc hydroxide generated by the reaction are conveniently removed, and the product is few in impurity and high in purity. In the salt formation step, acetone is used to wash, so that the purity of the product is improved, and the appearance of the product is ensured. According to the preparation method, the processis stable and reliable, the operation is easy, the product purity is high (the content of the product detected by high performance liquid chromatography is greater than or equal to 99%), the yield isgreater than or equal to 39%, and the demand on 4-methyl phenylhydrazine hydrochloride in the market is fully met.

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