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para-Phenylenediamine dihydrochloride

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Identification
Molecular formula
C6H10Cl2N2
CAS number
624-18-0
IUPAC name
benzene-1,4-diamine;dihydrochloride
State
State

At room temperature, para-Phenylenediamine dihydrochloride is typically in a solid state, existing as a crystalline powder.

Melting point (Celsius)
266.00
Melting point (Kelvin)
539.15
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
172.07g/mol
Molar mass
172.0700g/mol
Density
1.1990g/cm3
Appearence

Para-Phenylenediamine dihydrochloride appears as a white to light brown crystalline powder. It is hygroscopic in nature, meaning it tends to absorb moisture from the air, which can affect its physical appearance.

Comment on solubility

Solubility of Benzene-1,4-diamine Dihydrochloride

Benzene-1,4-diamine dihydrochloride, also known as p-phenylenediamine hydrochloride, exhibits interesting solubility properties that are influenced by its chemical structure.

  • Solvent Compatibility: This compound is generally soluble in water due to the presence of its two amino groups, which can form hydrogen bonds with water molecules.
  • Effect of pH: The solubility can change with pH levels; at lower pH, it becomes more soluble because the amino groups are protonated.
  • Concentration: Saturated solutions tend to be more stable at certain temperatures, thus affecting solubility limits.
  • Temperature Influence: Increased temperatures usually enhance the solubility of many salts, including benzenediamine dihydrochloride.

In summary, the solubility of benzene-1,4-diamine dihydrochloride can be described as:

  1. **High in water** due to ionic nature when dissolved
  2. **Variable** depending on pH levels
  3. **Temperature-dependent**, promoting greater solubility at elevated temperatures

Understanding these solubility characteristics is essential for applications in both laboratory settings and industrial processes where this compound might be utilized.

Interesting facts

Interesting Facts about Benzene-1,4-Diamine Dihydrochloride

Benzene-1,4-diamine dihydrochloride, also known as p-phenylenediamine, is a fascinating compound with several significant applications and properties. Here are some intriguing aspects of this chemical:

  • Applications in Various Industries:
    • This compound is widely used in the production of dyes and pigments, thanks to its ability to form vibrant colors.
    • In the textile industry, it plays a critical role in dyeing fabrics.
    • It is also important in the synthesis of rubber antioxidants, contributing to the longevity and durability of rubber products.
  • Role in Organic Chemistry:

    Benzene-1,4-diamine serves as an essential building block in organic synthesis. As a versatile intermediate, it allows chemists to create a wide array of other chemical compounds.

  • Health Considerations:

    Despite its utilities, p-phenylenediamine is associated with health risks, particularly as a potential allergen. Prolonged exposure can lead to skin irritation and sensitization.

  • Cultural Impact:

    This compound is often discussed in the context of hair dyes. It is known for its ability to produce long-lasting colors, but consumers should be aware of the potential for allergic reactions.

As stated by chemist Pauling, "Chemistry is the study of transformations of matter," and benzene-1,4-diamine dihydrochloride epitomizes this with its ability to transform the colors of materials through its chemical reactions.

In conclusion, while benzene-1,4-diamine dihydrochloride finds extensive use in various fields, it is vital to handle this compound with caution due to its health implications. Its dual nature as both a useful industrial chemical and a potential allergen encourages ongoing research into safer alternatives and practices.

Synonyms
624-18-0
p-Phenylenediamine dihydrochloride
benzene-1,4-diamine dihydrochloride
1,4-Phenylenediamine dihydrochloride
1,4-DIAMINOBENZENE DIHYDROCHLORIDE
Fourrine DS
Pelagol Grey CD
Durafur Black RC
Fourrine 64
p-PD HCl
p-Phenylenediamine HCl
Pelagol CD
1,4-Benzenediamine dihydrochloride
1,4-Benzenediamine, dihydrochloride
p-Pda HCl
Oxidation Base 10A
C.I. Oxidation Base 10A
4-Aminoaniline dihydrochloride
p-Benzenediamine dihydrochloride
p-Diaminobenzene dihydrochloride
CI Oxidation Base 10A
NCI-C03930
p-Phenylenediamine, dihydrochloride
p-Aminoaniline dihydrochloride
CCRIS 510
Phenylenediamine dihydrochloride
HSDB 5436
CI 76061
C.I. 76061
EINECS 210-834-9
1,4-Phenylenediamine 2-hydrochloride
NSC 112725
DTXSID8021141
1,4-Benzenediamine hydrochloride
RODOL DC
1,4-Phenylenediamine hydrochloride
GL418131I1
1,4-Benzenediamine, hydrochloride (1:2)
DTXCID901141
NSC-112725
1,4-DIAMINOBENZENE DIHYDROCHLORIDE [HSDB]
pPD HCl
pPDA HCl
pPhenylenediamine HCl
pAminoaniline dihydrochloride
4Aminoaniline dihydrochloride
pBenzenediamine dihydrochloride
pDiaminobenzene dihydrochloride
pPhenylenediamine hydrochloride
pPhenylenediamine dihydrochloride
paraPhenylenediamine hydrochloride
1,4Benzenediamine dihydrochloride
1,4Phenylenediamine 2hydrochloride
1,4Phenylenediamine dihydrochloride
P-PHENYLENEDIAMINE HCL [INCI]
1,4-PHENYLENEDIAMMONIUM DICHLORIDE
210-834-9
p-Phenylenediamine.2HCl
para-Phenylenediamine hydrochloride
p-Phenylenediamine 2HCl
UNII-GL418131I1
MFCD00013002
SCHEMBL378591
1,4-Phenyldiamine hydrochloride
CHEMBL3561416
AAA62418
benzene-1,4-diamine;dihydrochloride
paraphenylene diamine dihydrochloride
Tox21_303880
AKOS016008571
NCGC00357140-01
AS-12683
CAS-624-18-0
DB-073115
NS00080357
P0152
1,4-Phenylenediamine dihydrochloride, >=99.0%
EN300-1655031
Q3318029