p-Phenylenediamine
p-Phenylenediamine (CAS 106-50-3), a diamine with the formula C6H4(NH2)2, has a molecular weight of 108.14 g/mol. This organic compound is crucial in various industrial applications, primarily serving as a key intermediate in the synthesis of polymers, dyes, and antioxidants. Its chemical reactivity makes it an indispensable building block in organic synthesis and materials science.
- IUPAC
- 1,4-Benzenediamine,1,4-Diaminobenzene,1,4-Phenylenediamine
- Synonyms
- 1,4-Benzenediamine1,4-Diaminobenzene1,4-Phenylenediamine
Polymer Synthesis
p-Phenylenediamine is a vital monomer in the production of high-performance polymers such as aramids (e.g., Kevlar). These polymers exhibit exceptional strength, thermal stability, and resistance to chemicals, finding use in protective clothing and aerospace components.
Dye and Pigment Production
It serves as a precursor for azo dyes and hair dyes. The reactivity of its amine groups allows for facile coupling reactions, enabling the creation of a wide spectrum of colours used in textiles and other coloration applications.
Antioxidant Manufacturing
This compound is employed in the synthesis of antioxidants and antiozonants for rubber and other materials. These additives help to prevent degradation caused by oxidation and ozone exposure, thereby extending product lifespan.
Chemical Intermediate
As a versatile organic building block, p-Phenylenediamine is used in the synthesis of various organic compounds, including pharmaceuticals and agricultural chemicals, due to the presence of two reactive amine functionalities.
| Molecular weight | 108.14 |
|---|---|
| Linear formula | C6H4(NH2)2 |
| Assay | ≥99.0% (GC/NT) |
| Boiling point | 267 °C(lit.) |
| Vapour pressure | 1.08 mmHg (100 °C) |
| Vapour density | 3.7 (vs air) |
| Melting point | 138-143 °C(lit.) |
Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H331Toxic if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Flash point | 110 °C / 230 °F |
| Transport (UN / ADR) | UN 1673 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/24/25-36-43-50/53 |
| Safety statements (S) | 28-36/37-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is p-Phenylenediamine used for?
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p-Phenylenediamine is primarily used as a chemical intermediate in the synthesis of polymers (like aramids), dyes (including hair dyes), and antioxidants. It is a valuable building block in organic synthesis and materials science.
What is the CAS number and chemical formula for p-Phenylenediamine?
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The CAS number for p-Phenylenediamine is 106-50-3, and its chemical formula is C6H4(NH2)2.
What grade and purity does Tech Serve Solutions supply for p-Phenylenediamine?
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Tech Serve Solutions supplies p-Phenylenediamine with an assay of ≥99.0% (GC/NT). We do not represent this product as USP, BP, or EP grade.
How should p-Phenylenediamine be handled safely?
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p-Phenylenediamine is hazardous and requires careful handling. It is toxic if swallowed, in contact with skin, or if inhaled, and can cause skin irritation and serious eye irritation. It is also a skin sensitiser and toxic to aquatic life with long-lasting effects. Always use appropriate personal protective equipment, including eyeshields, faceshields, gloves, and P2 respirator cartridges, and ensure good ventilation. Refer to the Safety Data Sheet for comprehensive guidance.
Is p-Phenylenediamine a controlled substance?
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Based on the provided data, p-Phenylenediamine is not listed as a controlled substance. However, users should always verify current local and international regulations.
How is p-Phenylenediamine packed and shipped?
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p-Phenylenediamine is shipped according to UN 1673 regulations (Class 6.1, Packing Group III). Specific packaging details can be provided upon request.
How can I request a quote or sample of p-Phenylenediamine?
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To request a quote or a sample of p-Phenylenediamine, please contact our sales team through the website or by phone.
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