Tri-n-octylphosphine oxide
- CAS Number
- 78-50-2
- HSN Code
- 29319090
- Molecular Formula
- C24H51OP
- Catalogue Number
- AL02583
- Purity
- ≥ 99%
- Molecular Weight
- 386.63 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Tri-n-octylphosphine oxide (AR, for extraction analysis) is a widely used chelating extraction reagent for metal-ion separation. This compound is particularly effective in the extraction of actinides and other metal ions from aqueous solutions, making it invaluable in nuclear chemistry and hydrometallurgy. Its high purity of 99% ensures reliable performance in analytical applications, particularly in liquid-liquid extraction processes. The compound's ability to form stable complexes with metal ions enhances its utility in various extraction methodologies, contributing to its popularity in both research and industrial settings.
Also known as Tri-n-octylphosphine oxide.
- Catalogue No.
- AL02583
- CAS Number
- 78-50-2
- Molecular Formula
- C24H51OP
- Molecular Weight
- 386.63 g/mol
- HSN Code
- 29319090
- Grade
- AR, for extraction analysis
- Product Form
- Substance
Tri-n-octylphosphine oxide appears as a white waxy solid at room temperature. It has a melting point of approximately 30-32 °C and a boiling point of around 360 °C. The density of this compound is about 0.87 g/cm³, and it is soluble in organic solvents such as chloroform and toluene, but has limited solubility in water. The compound has a characteristic odor, which is mild and not overpowering, making it manageable in laboratory environments.
- Appearance
- White waxy solid
- Shelf Life
- -
- Packaging
- -
- Storage
- Store in a cool, dry place away from incompatible materials.
1.1 — Product identifier
- Chemical Name
- Tri-n-octylphosphine oxide
- Catalogue No.
- AL02583
- Product form
- Substance
- CAS Number
- 78-50-2
- EC Number
- 201-055-0
- Grade
- AR, for extraction analysis
- EC Index Number
- Not specified
- Chemical Formula
- C24H51OP
- HSN Code
- 29319090
- Synonyms
- Tri-n-octylphosphine oxide
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Chelating extraction reagent for metal-ion separation
- 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
- Tri-n-octylphosphine oxide
- CAS No.
- 78-50-2
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
- May cause mild irritation to skin and eyes.
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
- Combustible material; may produce 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 prevent entry into waterways. Use appropriate personal protective equipment.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Absorb spill with inert material and place in a chemical waste container.
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
- Odour
- Mild
- Odour threshold
- Not specified
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- 30-32 °C
- Freezing point
- Not specified
- Boiling point
- 360 °C
- Flash point
- Not specified
- Auto-ignition temperature
- Not specified
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Combustible
- Vapour pressure
- Not specified
- Relative vapour density at 20°C
- Not specified
- Density
- 0.87 g/cm³
- Solubility
- Soluble in organic solvents, insoluble in water
- 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.
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.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- Not specified
11.1 — Information on toxicological effects
- Acute toxicity
- Not classified as acutely toxic.
- Skin corrosion/irritation
- May cause mild irritation.
- Serious eye damage/irritation
- May cause mild irritation.
- Respiratory or skin sensitisation
- Not 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
Tri-n-octylphosphine oxide is primarily used as a chelating extraction reagent in the separation of uranium and other metal ions in liquid-liquid extraction processes. It finds applications in nuclear chemistry, particularly in the extraction and purification of actinides from spent nuclear fuel. Additionally, it is utilized in the hydrometallurgical processing of metals, where it aids in the recovery of valuable metals from ores and waste materials. Its effectiveness in complexing with various metal ions also makes it useful in analytical chemistry for trace metal analysis.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL02583
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 386.63 g/mol
| Test | Standard | Observed |
|---|---|---|
| Description | A white crystalline powder | A white crystalline powder |
| Assay | Min. 99.0% | 99.41% |
| Melting range | 52 - 56°C | 52 - 56°C |
| Free acid (as H3PO4) | <0.2% | 0.08% |
| Water | <0.5% | <0.5% |
The above product complies with AR grade
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 99% AR | ≥ 99% | 30-32 °C / 360 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in organic solvents |
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