N,N-Dimethyl-p-phenylenediamine
- CAS Number
- 99-98-9
- HSN Code
- 29215190
- Molecular Formula
- C8H12N2
- Catalogue Number
- AL1862
- Purity
- ≥ 98%
- Molecular Weight
- 136.19 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
N,N-dimethyl-1,4-phenylenediamine is a diamine and a substituted aniline.
Also known as 4,4-Dimethyl-1,3-phenylenediamine.
- Catalogue No.
- AL1862
- CAS Number
- 99-98-9
- Molecular Formula
- C8H12N2
- Molecular Weight
- 136.19 g/mol
- HSN Code
- 29215190
- Grade
- 98%
- Product Form
- Substance
Melting point: 53 °C; also stated as 41 °C; Boiling point: 263 °C; Flash point: 91.00 °C (195.80 °F) - closed cup; Density: 1.036 g/cu cm at 20 °C; Solubility: Soluble in chloroform; very soluble in ethanol, ethyl ether, benzene; slightly soluble in ligroin.
- Appearance
- Reddish-violet crystals
- Shelf Life
- Stable under recommended storage conditions
- Packaging
- Available in: 25 gm glass bottle
- Storage
- Keep container tightly closed in a dry and well-ventilated place. Light sensitive.
1.1 — Product identifier
- Chemical Name
- N,N-Dimethyl-p-phenylenediamine
- Catalogue No.
- AL1862
- Product form
- Substance
- CAS Number
- 99-98-9
- EC Number
- 202-807-5
- Grade
- 98%
- EC Index Number
- 612-052-00-9
- Chemical Formula
- C8H12N2
- HSN Code
- 29215190
- Synonyms
- 4,4-Dimethyl-1,3-phenylenediamine
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Used in analytical chemistry and dye manufacturing.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Acute Tox. 3
- Classification source
- ECHA C&L Inventory via PubChem CID 7472 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Acute Toxic
- Signal word
- Danger
- Hazard statements
- H301: Toxic if swallowed; H311: Toxic in contact with skin; H331: Toxic if inhaled
2.3 — Other hazards
- Other hazards
- May cause respiratory irritation and skin sensitization.
3.1 — Substance
- Name
- N,N-Dimethyl-p-phenylenediamine
- CAS No.
- 99-98-9
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move to fresh air. If symptoms persist, seek medical attention.
- First-aid measures after skin contact
- Wash with soap and water. If irritation occurs, seek medical attention.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. If irritation persists, seek medical attention.
- First-aid measures after ingestion
- Rinse mouth. Do not induce vomiting. Seek medical attention immediately.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Symptoms of exposure may include headache, dizziness, and skin irritation.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special protective equipment for firefighters Wear self contained breathing apparatus for fire fighting if necessary.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Toxic fumes may be released in a fire. Use water spray to cool containers.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area and ventilate. Wear appropriate protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Contain spill and collect using inert absorbent material. Dispose of in accordance with local regulations.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Avoid contact with skin and eyes. Use in a fume hood with appropriate PPE.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Keep container tightly closed in a dry and well-ventilated place. Light sensitive.
8.2 — Exposure controls
- Hand protection
- Handle with gloves.
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Where risk assessment shows air-purifying respirators are appropriate use a full-face particle respirator type N100 (US) or type P3 (EN 143) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White to pale tan
- Odour
- Slight amine-like
- Odour threshold
- No data available
- pH value
- No data available
- Relative evaporation rate (butylacetate=1)
- No data available
- Melting point
- 53 °C; also stated as 41 °C
- Freezing point
- No data available
- Boiling point
- 263 °C
- Flash point
- 91.00 °C (195.80 °F) - closed cup
- Auto-ignition temperature
- No data available
- Decomposition temperature
- No data available
- Flammability (solid, gas)
- No data available
- Vapour pressure
- No data available
- Relative vapour density at 20°C
- 4.69 - Heavier than air; will sink (Relative to Air)
- Density
- 1.036 g/cu cm at 20 °C
- Solubility
- Soluble in chloroform; very soluble in ethanol, ethyl ether, benzene; slightly soluble in ligroin
- Log Pow
- No data available
- Viscosity, kinematic
- No data available
- Viscosity, dynamic
- No data available
- Explosive properties
- No data available
- Oxidising properties
- No data available
- Explosive limits
- No data available
10.1 — Reactivity
- Reactivity
- Stable under normal conditions. Avoid strong oxidizing agents.
10.2 — Chemical stability
- Chemical stability
- Chemical stability: Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- No dangerous reactions known under normal conditions of use.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizing agents, strong acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- When heated to decomposition it emits toxic fumes of NOx.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rats oral 171 mg/kg bw; LD50 Rats oral 67 mg/kg bw
- Skin corrosion/irritation
- Not classified (based on available data)
- Serious eye damage/irritation
- Not classified (based on available data)
- Respiratory or skin sensitisation
- Not classified (based on available data)
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- 2811
- UN-No. (IMDG)
- 2811
- UN-No. (IATA)
- 2811
- UN-No. (ADN)
- 2811
- UN-No. (RID)
- 2811
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Toxic solid, organic, n.o.s. (N,N-Dimethyl-p-phenylenediamine)
- Proper Shipping Name (IMDG)
- Toxic solid, organic, n.o.s. (N,N-Dimethyl-p-phenylenediamine)
- Proper Shipping Name (IATA)
- Toxic solid, organic, n.o.s. (N,N-Dimethyl-p-phenylenediamine)
- Proper Shipping Name (ADN)
- Toxic solid, organic, n.o.s. (N,N-Dimethyl-p-phenylenediamine)
- Proper Shipping Name (RID)
- Toxic solid, organic, n.o.s. (N,N-Dimethyl-p-phenylenediamine)
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 6.1
14.4 — Packing group
- Packing group (ADR)
- II
- Packing group (IMDG)
- II
- Packing group (IATA)
- II
- Packing group (ADN)
- II
- Packing group (RID)
- II
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Primarily used as a precursor to DPD reagent salts for chlorine determination and as an intermediate in dye chemistry.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL0623K
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 136.19 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 99.5% |
| Melting Point | 50-52 °C | 51 °C |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
| Solubility | Soluble in water and organic solvents | Soluble in both |
The above product is expected to comply with 98% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | m.p. 53 °C; also stated as 41 °C; b.p. 263 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in chloroform; very soluble in ethanol, ethyl ether, benzene; slightly soluble in ligroin |
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