Note: Ingredients listed on restricted chemical lists
EC/CAS
122-52-1
Name of the chemical
phosphorous acid, triethyl ester
Concentration
<=100
General Information
Version
ACR13969
Revision date
2026-07-07
Product name
Triethyl phosphite
Product Synonyms
Phosphorous acid triethyl ester
CAS No.
122-52-1
supplier name
Fisher Scientific UK
Emergency telephone
001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific UK
e-mail address of the competent person responsible for the Safety Data Sheet
begel.sdsdesk@thermofisher.com
GHS Information
Signal word
Warning
Hazard Codes
Hazard statements (CLP)
H226, H313, H317, H319, H361, H371
Hazard statements
Code
Statements
H226
Flammable liquid and vapour
Section 2
SECTION 2: Hazards identification
Physical State
Appearance/Odor
Liquid Clear Stench Emergency Overview Flammable liquid and vapor. May cause an allergic skin reaction. Causes serious eye irritation. Suspected of damaging fertility or the unborn child. May cause damage to organs. May be harmful in contact with skin. Moisture sensitive. Air sensitive. Stench. Classification of the substance or mixture Flammable liquids Category 3 Acute Dermal Toxicity Category 5 Serious Eye Damage/Eye Irritation Category 2B Skin Sensitization Category 1 Reproductive Toxicity Category 2 Specific target organ toxicity - (single exposure) Category 2 Label Elements Hazard Statements H226 - Flammable liquid and vapor H317 - May cause an allergic skin reaction H319 - Causes serious eye irritation H361 - Suspected of damaging fertility or the unborn child H371 - May cause damage to organs H313 - May be harmful in contact with skin
Prevention
P201 - Obtain special instructions before use P202 - Do not handle until all safety precautions have been read and understood P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P233 - Keep container tightly closed P240 - Ground and bond container and receiving equipment P241 - Use explosion-proof electrical/ ventilating/ lighting equipment P242 - Use non-sparking tools P243 - Take action to prevent static discharges P264 - Wash face, hands and any exposed skin thoroughly after handling P270 - Do not eat, drink or smoke when using this product P272 - Contaminated work clothing should not be allowed out of the workplace P280 - Wear protective gloves/protective clothing/eye protection/face protection
Response
P303 + P361 + P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P308 + P313 - IF exposed or concerned: Get medical advice/attention P363 - Wash contaminated clothing before reuse P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish
Storage
P403 + P235 - Store in a well-ventilated place. Keep cool
Disposal
P501 - Dispose of contents/ container to an approved waste disposal plant
Other physicochemical hazards
Vapors may cause flash fire or explosion. Flammable liquid. Water reactive.
Health hazards
May cause an allergic skin reaction. Causes serious eye irritation. Suspected of damaging fertility or the unborn child. May cause damage to organs. May be harmful in contact with skin.
Environmental hazards
Contains no substances known to be hazardous to the environment or not degradable in waste water treatment plants. . Is not likely mobile in the environment. Hydrolyses.
2.3 Other hazards
Stench. This product does not contain any known or suspected endocrine disruptors.
2.1 Classification of the substance or mixture
Flammable liquids. Category 3 Acute Dermal Toxicity Category 5 Serious Eye Damage/Eye Irritation Category 2B Skin Sensitization Category 1 Reproductive Toxicity Category 2 Specific target organ toxicity - (single exposure)