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Para-phenylenediamine dihydrochloride

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Identification
Molecular formula
C6H10Cl2N2
CAS number
615-28-1
IUPAC name
2-methylbenzene-1,4-diamine;dihydrochloride
State
State

At room temperature, para-phenylenediamine dihydrochloride is in a solid state. It is typically found as a crystalline powder and can be dissolved in water to form aqueous solutions, which are often used in industrial and laboratory settings.

Melting point (Celsius)
268.00
Melting point (Kelvin)
541.15
Boiling point (Celsius)
290.00
Boiling point (Kelvin)
563.15
General information
Molecular weight
198.11g/mol
Molar mass
198.1070g/mol
Density
1.4060g/cm3
Appearence

Para-phenylenediamine dihydrochloride appears as a white to off-white crystalline powder. It may exhibit a slight pink or brownish tint if exposed to air due to slow oxidation processes. This compound is known for its solubility in water, creating clear to slightly colored solutions, depending on the concentration and purity.

Comment on solubility

Solubility of 2-methylbenzene-1,4-diamine;dihydrochloride

2-methylbenzene-1,4-diamine;dihydrochloride, commonly known as m-phenylenediamine dihydrochloride, is a compound that exhibits particular solubility characteristics. The following points can be noted about its solubility:

  • Water Solubility: This compound is relatively soluble in water due to its ionic nature, stemming from the presence of two hydrochloride (HCl) groups. This solubility is enhanced at lower pH levels.
  • Solvent Interaction: As an amine, 2-methylbenzene-1,4-diamine has the ability to form hydrogen bonds with water molecules, which assists in its dissolution.
  • Temperature Dependence: The solubility may increase with temperature, which is common for many salts and ionic compounds.
  • Organic Solvents: While it has good solubility in water, its solubility in organic solvents may be limited. The specific interactions with organic solvents can vary and should be tested individually.

As a dihydrochloride salt, it is essential to remember that solubility can also depend on several factors such as concentration, temperature, and the presence of other ions in solution. Overall, 2-methylbenzene-1,4-diamine;dihydrochloride is a compound with notable solubility in aqueous environments, making it valuable in various chemical applications.

Interesting facts

Interesting Facts about 2-Methylbenzene-1,4-diamine; Dihydrochloride

2-methylbenzene-1,4-diamine; dihydrochloride, commonly known as para-Toluidine Dihydrochloride, is an intriguing compound with numerous applications and characteristics worth exploring. Below are some fascinating insights:

  • Chemical Structure: This compound consists of a benzene ring substituted with amino groups at the 1 and 4 positions, along with a methyl group at the 2 position, giving it unique reactivity and interactions.
  • Applications: Para-toluidine dihydrochloride is utilized primarily in the synthesis of dyes, as well as in the production of certain chemicals and pharmaceuticals. Its derivative compounds often find roles in the manufacturing of colorants used in textiles.
  • Historical Significance: This compound has played a pivotal role in the dye industry since the late 19th century, showcasing the historical development of synthetic colorants and their advent into consumer products.
  • Toxicity Precautions: As with many aromatic amines, 2-methylbenzene-1,4-diamine can be potentially harmful. It is advisable to handle this compound with care, following safety protocols to minimize exposure and health risks.
  • Important Reactions: This compound participates in various chemical reactions, including nucleophilic substitutions and coupling reactions, making it a versatile building block in organic synthesis.

As a chemistry student or a scientist, understanding compounds like 2-methylbenzene-1,4-diamine; dihydrochloride not only enhances our grasp of organic chemistry but also sheds light on the interconnectedness of chemical properties, applications, and safety considerations. Its role in dye synthesis exemplifies the practical applications of aromatic compounds in everyday life.

Synonyms
615-45-2
2,5-Diaminotoluene dihydrochloride
p-Toluenediamine dihydrochloride
1,4-Benzenediamine, 2-methyl-, dihydrochloride
Toluene-2,5-diamine, dihydrochloride
HSDB 6252
2-METHYL-1,4-BENZENEDIAMINE DIHYDROCHLORIDE
GY506235UT
toluene-2,5-diamine dihydrochloride
1,4-Benzenediamine, 2-methyl-, hydrochloride (1:2)
DTXSID4060650
PARATOLUENEDIAMINE DIHYDROCHLORIDE
2-METHYL-1,4-BENZENEDIAMINE DIHYDROCHLORIDE [HSDB]
pToluenediamine dihydrochloride
DTXCID5043059
2,5Diaminotoluene dihydrochloride
Toluene2,5diamine, dihydrochloride
1,4Benzenediamine, 2methyl, dihydrochloride
623-466-2
2-methylbenzene-1,4-diamine dihydrochloride
2,5-DIAMINOTOLUENE DIHCl
2-methylbenzene-1,4-diamine;dihydrochloride
UNII-GY506235UT
MFCD00035512
SCHEMBL1154268
VQUHVWVGRKTIBH-UHFFFAOYSA-N
Diaminotoluenedihydrochloride; 98%
2,5-Toluenediamine Dihydrochloride
Tolylene-2,5-diamine Dihydrochloride
AKOS015844895
Toluene, 2,5-diamine-, dihydrochloride
BS-44193
2-methyl-p-phenylenediamine dihydrochloride
DB-053924
CS-0454109
D0126
2-Methyl-1,4-phenylenediamine Dihydrochloride
D87687
Q27279350