C9H21O3P
208.23 g/mol
Industrial ChemicalDanger
TRIISOPROPYL PHOSPHITE
CAS116-17-6EC204-130-0
Category
Industrial Chemical
Compound Class
Ester
Primary Use
lubricant additive and antioxidant
Triisopropyl phosphite is an organophosphorus compound, specifically a phosphite ester, with the formula P(OC3H7)3. It is primarily used as a lubricant additive and antioxidant.
lubricant additiveantioxidant
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
Substances on this list are tightly controlled under chemical-weapons or precursor regulations. ChemAbout does not facilitate their procurement; this page is a compliance reference only.
Relevant lists:Australia Group Chemical Weapons Precursors
CAS 116-17-6
Related Compounds
ReferenceSame Category
Methyl dichloroacetate
CAS116-54-1
chemical intermediate for manufacturing
ReferenceSame Category
3-Iodo-4-fluorobromobenzene
CAS116272-41-4
chemical intermediate for synthesis
ReferenceSame Category
Decabromodiphenyl ether
CAS1163-19-5
Brominated additive flame retardant
ReferenceSame Category
Tetrachlorophthalic anhydride
CAS117-08-8
Flame retardant and chemical intermediate
Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
Regulatory Compliance1
- Australia Group Chemical Weapons PrecursorsGlobalRegulation
Customs Tariff Classification
The international HS code for TRIISOPROPYL PHOSPHITE (CAS 116-17-6) is 2920.29.
HS code (international, 6-digit)
2920.29
EU CN code (8-digit)
2920 29 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
tripropan-2-yl phosphite
InChIKey
SJHCUXCOGGKFAI-UHFFFAOYSA-N
SMILES
CC(C)OP(OC(C)C)OC(C)C
Synonyms (16)
- Medronic Acid Imp. A (EP); Medronic Acid Impurity A
- Medronic acid impurity A, European Pharmacopoeia (EP)
- Isopropyl phosphite, tri-
- Medronic acid impurity A CRS
- TRIISOPROPYL PHOSPHITE
- TRIS(ISOPROPYL) PHOSPHITE
- Tri-2-propyl phosphite
- Tri-i-propylphosphite
- Triisopropoxyphosphine
- Tris(1-methylethoxy)phosphane
- tripropan-2-yl phosphite
- tris(propan-2-yl) phosphite