1,2-Diamino-4,5-Dimethylbenzene

1,2-Diamino-4,5-Dimethylbenzene - Names and Identifiers

Name	4,5-dimethyl-1,2-phenylenediamine
Synonyms	m-Xylene-4,5-diamine 4,5-diamino-o-xylene 4,5-dimethylbenzene-1,2-diamine 3,5-dimethylbenzene-1,2-diamine 1,2-Diamino-3,5-dimethylbenzene 3,5-DIMETHYLBENZENE-1,2-DIAMINE 4,6-dimethyl-o-phenylenediamine 1,2-Diamino-4,5-Dimethylbenzene 4,5-Dimethyl-o-phenylene diamine 1,2-Benzenediamine, 3,5-dimethyl- 3,5-Dimethyl-1,2-phenylenediamine 4,5-dimethyl-1,2-phenylenediamine (2-amino-4,6-dimethyl-phenyl)amine
CAS	3171-45-7 3171-46-8
EINECS	221-635-1
InChI	InChI=1/C8H12N2/c1-5-3-7(9)8(10)4-6(5)2/h3-4H,9-10H2,1-2H3

1,2-Diamino-4,5-Dimethylbenzene - Physico-chemical Properties

Molecular Formula	C8H12N2
Molar Mass	136.19
Density	1.076±0.06 g/cm3(Predicted)
Melting Point	73-78℃
Boling Point	272.1±35.0 °C(Predicted)
Flash Point	144.9°C
Vapor Presure	0.00399mmHg at 25°C
pKa	4.45±0.10(Predicted)
Storage Condition	2-8°C
Refractive Index	1.618
MDL	MFCD00007729

1,2-Diamino-4,5-Dimethylbenzene - Risk and Safety

Hazard Symbols	Xn - Harmful
Risk Codes	R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description	26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany	3
Hazard Class	IRRITANT

1,2-Diamino-4,5-Dimethylbenzene - Introduction

4,5-dimethyl-1,2-phenylenediamine(4,5-dimethyl-1,2-phenylenediamine) is an organic compound with the chemical formula C8H12N2. The following is a detailed description of its nature, use, preparation and safety information:

Nature:
-Appearance: 4,5-dimethyl-1,2-phenylenediamine is a colorless or slightly yellow crystalline or powdery substance.
-Solubility: It has low solubility in water, and has good solubility in organic solvents (such as methanol, ethanol, ether, etc.).
-Melting point: The melting point of 4,5-dimethyl-1,2-phenylenediamine is about 79-81 degrees Celsius.
-Stability: It is relatively stable at room temperature, but may decompose or produce toxic gases under high temperature, strong oxidants or acidic conditions.

Use:
-Chemical reagent: 4,5-dimethyl-1,2-phenylenediamine is mainly used as an intermediate for dyes, pigments and hair dyes.
-Dyes: It can react with oxidants to generate colored compounds, so it can be used in the production of dyes, especially in dyed fibers, leather and plastics.
-Pigments: Due to its organic structural stability and good color expression, 4,5-dimethyl-1,2-phenylenediamine can be used in the painting, ink and pigment manufacturing industries.
-Hair dye: Its chemical properties make it suitable for use as one of the hair dye ingredients.

Method:
4,5-dimethyl-1,2-phenylenediamine can be prepared by methylating p-toluidine (toluidine). A general method of preparation involves the reaction of methylmagnesium bromide (MeMgBr) with toluidine in the presence of a suitable catalyst to give 4,5-dimethy1-l, 2-phenylenediamine.

Safety Information:
- 4,5-dimethyl-1,2-phenylenediamine in contact with the skin, eyes or inhalation may cause irritation and damage to the human body, direct contact should be avoided. Wear appropriate personal protective equipment such as gloves, masks and goggles during use.
-It is a combustible substance and should be kept away from open flames and flames.
-During storage and handling, appropriate ventilation measures should be taken to prevent the accumulation of vapor and dust.
-Please store and dispose of chemicals properly to avoid environmental pollution. For further safety information, please refer to the relevant chemical safety data form (MSDS) or consult a relevant professional.

Last Update：2024-04-10 22:29:15