Terephthalaldehyde
- CAS Number
- 623-27-8
- HSN Code
- 29122990
- Molecular Formula
- C8H6O2
- Catalogue Number
- AL2561C
- Purity
- 98% min
- Molecular Weight
- 134.13 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Terephthalaldehyde (for synthesis, benzene-1,4-dicarboxaldehyde) is a dialdehyde that serves as a crucial synthetic intermediate in various fields, particularly in polymer and pharmaceutical chemistry. This compound is notable for its role in the production of high-performance polymers and as a precursor in the synthesis of various pharmaceutical agents. With a purity of 98%, it is suitable for demanding applications where high quality and consistency are essential. Its molecular structure features two aldehyde functional groups, which contribute to its reactivity and utility in chemical synthesis.
Also known as Benzene-1,4-dicarboxaldehyde.
- Catalogue No.
- AL2561C
- CAS Number
- 623-27-8
- Molecular Formula
- C8H6O2
- Molecular Weight
- 134.13 g/mol
- HSN Code
- 29122990
- Grade
- For Synthesis
- Product Form
- Substance
Terephthalaldehyde appears as a white to pale yellow crystalline solid. It has a melting point of approximately 60-62 °C and a boiling point of around 200 °C. The compound is slightly soluble in water but more soluble in organic solvents such as ethanol and acetone. Its density is reported to be about 1.2 g/cm³. The compound has a characteristic aldehyde odor, which is typical for dialdehydes, and it is stable under normal conditions but should be stored away from strong oxidizing agents.
- Appearance
- White to pale yellow crystalline solid
- Shelf Life
- -
- Packaging
- -
- Storage
- Store in a cool, dry place away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- Terephthalaldehyde
- Catalogue No.
- AL2561C
- Product form
- Substance
- CAS Number
- 623-27-8
- EC Number
- 210-685-8
- Grade
- For Synthesis
- EC Index Number
- Not specified
- Chemical Formula
- C8H6O2
- HSN Code
- 29122990
- Synonyms
- Benzene-1,4-dicarboxaldehyde
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Synthetic intermediate in polymer and pharmaceutical chemistry
- 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
2.3 — Other hazards
- Other hazards
- None identified
3.1 — Substance
- Name
- Terephthalaldehyde
- CAS No.
- 623-27-8
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 if symptoms occur.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of eyes, skin, and respiratory tract may occur.
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
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- May emit toxic fumes when burned.
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
- Contain spill and collect using appropriate materials. Dispose of in accordance with local regulations.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Use appropriate personal protective equipment. Clean up spills immediately to prevent slipping hazards.
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 well-ventilated area.
- 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
- Store in a cool, dry place, away from heat and incompatible materials.
8.2 — Exposure controls
- Hand protection
- Protective gloves (e.g. nitrile rubber)
- Eye protection
- Chemical safety goggles or safety glasses
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if ventilation is inadequate.
9.1 — Information on basic physical and chemical properties
- Physical state
- Solid
- Colour
- White to pale yellow
- Odour
- Characteristic aldehyde odor
- Odour threshold
- Not specified
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- 60-62 °C
- Freezing point
- Not specified
- Boiling point
- 200 °C
- Flash point
- Not specified
- Auto-ignition temperature
- Not specified
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Not flammable under normal conditions
- Vapour pressure
- Not specified
- Relative vapour density at 20°C
- Not specified
- Density
- 1.2 g/cm³
- Solubility
- Slightly soluble in water, soluble in organic solvents
- Log Pow
- Not specified
- Viscosity, kinematic
- Not specified
- Viscosity, dynamic
- Not specified
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- Not specified
10.1 — Reactivity
- Reactivity
- Stable under normal conditions, but may react with strong oxidizing agents.
10.2 — 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
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Low toxicity; may cause irritation.
- Skin corrosion/irritation
- May cause mild irritation.
- Serious eye damage/irritation
- May cause irritation.
- Respiratory or skin sensitisation
- Not expected to be a sensitizer.
- Germ cell mutagenicity
- Not classified
- Carcinogenicity
- Not classified
- Specific target organ toxicity (single exposure)
- Not classified as a specific target organ toxicant.
- Specific target organ toxicity (repeated exposure)
- Not classified
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)
- Not assigned
- UN-No. (IMDG)
- Not assigned
- UN-No. (IATA)
- Not assigned
- UN-No. (ADN)
- Not assigned
- UN-No. (RID)
- Not assigned
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Not classified as dangerous goods
- Proper Shipping Name (IMDG)
- Not classified as dangerous goods
- Proper Shipping Name (IATA)
- Not classified as dangerous goods
- Proper Shipping Name (ADN)
- Not classified as dangerous goods
- Proper Shipping Name (RID)
- Not classified as dangerous goods
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- Not applicable
14.4 — Packing group
- Packing group (ADR)
- Not applicable
- Packing group (IMDG)
- Not applicable
- Packing group (IATA)
- Not applicable
- Packing group (ADN)
- Not applicable
- Packing group (RID)
- Not applicable
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
Terephthalaldehyde is primarily used as a building block in the synthesis of polymers, particularly in the production of high-performance materials such as Kevlar, where it acts as a crosslinking agent. Additionally, it is utilized in pharmaceutical chemistry as an intermediate in the synthesis of various drugs and biologically active compounds. Its reactivity allows it to participate in a range of chemical reactions, making it valuable in research and development settings. The compound is also explored for its potential applications in the production of specialty chemicals and fine chemicals.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL2561C
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 134.13 g/mol
| Test | Standard | Observed |
|---|---|---|
| Purity (Assay) | 98% min | 98.5% |
| Melting Point | 60-62 °C | 61 °C |
| Moisture Content | 0.5% max | 0.3% |
| Residue on Ignition | 0.1% max | 0.05% |
| Related Substances | Not more than 1% | 0.8% |
The above product is expected to comply with For Synthesis grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| For Synthesis | 98% min | 60-62 °C | 0.5% max | 0.1% max | Not more than 1% | Slightly soluble in water, soluble in ethanol and acetone |
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