N,N-Dimethyl-p-phenylenediamine
N,N-Dimethyl-p-phenylenediamine (CAS: 99-98-9) is an organic compound with the linear formula (CH3)2NC6H4NH2 and a molecular weight of 136.19 g/mol. This aromatic amine serves as a valuable building block in chemical synthesis, particularly in the creation of nitrogen-containing compounds and polyamines. Its specific properties make it useful in various laboratory and industrial applications requiring organic intermediates.
- IUPAC
- 4-(Dimethylamino)aniline,4-Amino-N,N-dimethylaniline,N,N-Dimethyl-1,4-phenylenediamine,DMPPDA
- Synonyms
- 4-(Dimethylamino)aniline4-Amino-N,N-dimethylanilineN,N-Dimethyl-1,4-phenylenediamineDMPPDA

Chemical Synthesis Intermediate
Serves as a versatile intermediate in organic synthesis for the preparation of complex molecules, dyes, and polymers. Its reactive amine groups allow for diverse chemical transformations.
Reagent in Analytical Chemistry
Used as a reagent in certain analytical methods. For example, it can be employed in tests for detecting oxidizing agents or in specific colorimetric analyses.
Building Block for Specialty Chemicals
Acts as a foundational component in the synthesis of specialty chemicals, including pharmaceuticals and agrochemicals, leveraging its diamine structure.
| Molecular weight | 136.19 |
|---|---|
| Linear formula | (CH3)2NC6H4NH2 |
| Assay | ≥95.0% (GC) |
| Boiling point | 262 °C(lit.) |
| Melting point | 34-36 °C(lit.)34-38 °C |

Hazard statements
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H331Toxic if inhaled
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Flash point | 91 °C / 195.8 °F |
| Transport (UN / ADR) | UN 2811 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25 |
| Safety statements (S) | 28-45 |
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 N,N-Dimethyl-p-phenylenediamine used for?
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N,N-Dimethyl-p-phenylenediamine is primarily used as a building block in chemical synthesis, a reagent in analytical chemistry, and for the preparation of specialty chemicals, including dyes and polymers.
What are the CAS number and formula for N,N-Dimethyl-p-phenylenediamine?
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The CAS number is 99-98-9, and its linear formula is (CH3)2NC6H4NH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies N,N-Dimethyl-p-phenylenediamine with an assay of ≥95.0% (GC). We do not represent this product as USP, BP, or EP grade.
How should N,N-Dimethyl-p-phenylenediamine be handled?
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N,N-Dimethyl-p-phenylenediamine is classified as toxic if swallowed, in contact with skin, or if inhaled (H301-H311-H331). Handling requires appropriate personal protective equipment, including eyeshields, faceshields, gloves, and a P2 respirator, in a well-ventilated area. Always consult the Safety Data Sheet before use.
Is N,N-Dimethyl-p-phenylenediamine a controlled substance?
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The provided data does not indicate that N,N-Dimethyl-p-phenylenediamine is a controlled substance.
How is this chemical packed and shipped?
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N,N-Dimethyl-p-phenylenediamine is shipped according to UN 2811, Class 6.1, Packing Group II regulations. Packaging is designed to ensure safe transport and handling.
How can I request a sample or quote?
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To request a sample or a quote for N,N-Dimethyl-p-phenylenediamine, please contact our sales team through the website or by phone, providing your specific requirements.
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