Triethyl phosphite
- CAS Number
- 122-52-1
- HSN Code
- 29209099
- Molecular Formula
- C6H15O3P
- Catalogue Number
- AL4659
- Purity
- ≥ 98%
- Molecular Weight
- 166.16 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Triethyl phosphite appears as a clear colorless liquid with a strong foul odor. Flash point 130 °F. Less dense than water and insoluble in water.
Also known as Triethyl phosphite, Phosphorous acid triethyl ester.
- Catalogue No.
- AL4659
- CAS Number
- 122-52-1
- Molecular Formula
- C6H15O3P
- Molecular Weight
- 166.16 g/mol
- HSN Code
- 29209099
- Grade
- For Synthesis
- Product Form
- Substance
Melting point: -112 °C; Boiling point: 157.9 °C; Flash point: 54 °C (129 °F) - closed cup; Density: 0.9629 g at 20 °C; Solubility: Soluble in alcohol, ether.
- Appearance
- Colorless liquid
- Shelf Life
- 2 years
- Packaging
- Available in: 250 ml glass bottle, 1 Lt glass bottle
- Storage
- Fireproof. Dry. Separated from acids and strong oxidants. See Chemical Dangers.
1.1 — Product identifier
- Chemical Name
- Triethyl phosphite
- Catalogue No.
- AL4659
- Product form
- Substance
- CAS Number
- 122-52-1
- EC Number
- 204-552-5
- Grade
- For Synthesis
- EC Index Number
- phosphite esters
- Chemical Formula
- C6H15O3P
- HSN Code
- 29209099
- Synonyms
- Triethyl phosphite, Phosphorous acid triethyl ester
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Reagent in organic synthesis, particularly in the Arbuzov reaction.
- 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
- Flam. Liq. 3; Acute Tox. 4; Skin Sens. 1; Aquatic Chronic 3
- Classification source
- ECHA C&L Inventory via PubChem CID 31215 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Flammable, Irritant
- Signal word
- Warning
- Hazard statements
- H226: Flammable liquid and vapor; H302: Harmful if swallowed; H317: May cause an allergic skin reaction; H412: Harmful to aquatic life with long lasting effects
2.3 — Other hazards
- Other hazards
- May cause respiratory irritation. Prolonged exposure may cause skin and eye irritation.
3.1 — Substance
- Name
- Triethyl phosphite
- CAS No.
- 122-52-1
4.1 — Description of first aid measures
- First-aid measures after inhalation
- CALL FOR MEDICAL ASSISTANCE. Remove to fresh air. Treat symptomatically.
- First-aid measures after skin contact
- Flush affected area with soap and plenty of water.
- First-aid measures after eye contact
- Flush with water for 15 minutes.
- First-aid measures after ingestion
- If swallowed and victim is conscious, have victim drink 1-2 glasses of milk or water and induce vomiting. If unconscious, do nothing except keep victim warm.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Irritation of the respiratory tract, skin, and eyes; headache; dizziness.
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
- Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Flammable liquid. Vapors may form explosive mixtures with air.
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. Remove all sources of ignition. Ventilate area.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use in a well-ventilated area. Avoid contact with skin and eyes. Keep away from heat and ignition sources.
- 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
- Fireproof. Dry. Separated from acids and strong oxidants. See Chemical Dangers.
8.2 — Exposure controls
- Hand protection
- Handle with gloves.
- Eye protection
- Face shield and safety glasses. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
- 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
- Liquid
- Colour
- Colorless to pale yellow
- Odour
- Pungent odor
- Odour threshold
- No data available
- pH value
- No data available
- Relative evaporation rate (butylacetate=1)
- No data available
- Melting point
- -112 °C
- Freezing point
- No data available
- Boiling point
- 157.9 °C
- Flash point
- 54 °C (129 °F) - closed cup
- Auto-ignition temperature
- 250 °C
- Decomposition temperature
- No data available
- Flammability (solid, gas)
- Flammable liquid
- Vapour pressure
- 1.95 mm Hg at 20 °C
- Relative vapour density at 20°C
- No data available
- Density
- 0.9629 g at 20 °C
- Solubility
- Soluble in alcohol, ether
- Log Pow
- No data available
- Viscosity, kinematic
- No data available
- Viscosity, dynamic
- 1.5 mPa·s at 20°C
- Explosive properties
- No data available
- Oxidising properties
- No data available
- Explosive limits
- No data available
10.1 — Reactivity
- Reactivity
- Stable under normal conditions. Reacts 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
- Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides. Reacts with water, acids and strong oxidants.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizers, strong acids, and bases.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- The substance decomposes on heating or on burning producing toxic fumes including phosphorous oxides.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rabbit (female) dermal >3,000 mg/kg bw; LD50 Rabbit (male) dermal 2,800 mg/kg bw; LD50 Rat (male) inhalation 11,600 mg/cu m (6 hr)
- Skin corrosion/irritation
- Not classified (based on available data)
- Serious eye damage/irritation
- Not classified (based on available data)
- Respiratory or skin sensitisation
- H317: May cause an allergic skin reaction
- 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)
- UN 2323
- UN-No. (IMDG)
- UN 2323
- UN-No. (IATA)
- UN 2323
- UN-No. (ADN)
- UN 2323
- UN-No. (RID)
- UN 2323
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- Triethyl phosphite
- Proper Shipping Name (IMDG)
- Triethyl phosphite
- Proper Shipping Name (IATA)
- Triethyl phosphite
- Proper Shipping Name (ADN)
- Triethyl phosphite
- Proper Shipping Name (RID)
- Triethyl phosphite
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 3
14.4 — Packing group
- Packing group (ADR)
- III
- Packing group (IMDG)
- III
- Packing group (IATA)
- III
- Packing group (ADN)
- III
- Packing group (RID)
- III
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
Reagent in synthetic organic chemistry.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL2579B
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 166.16 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 98% | 98.5% |
| Density | 0.969 g/mL | 0.968 g/mL |
| Boiling Point | 162°C | 162°C |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.1% | 0.05% |
| Related Substances | None detected | None detected |
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 |
|---|---|---|---|---|---|---|
| 98% | ≥ 98% | m.p. -112 °C; b.p. 157.9 °C | ≤ 0.5% | ≤ 0.1% | None detected | Soluble in alcohol, ether |
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