Ingredient Dictionary

TRIETHYL PHOSPHATE

Triethyl phosphate is a trialkyl phosphate that is the triethy ester derivative of phosphoric acid.

Definition

Triethyl phosphate is a trialkyl phosphate that is the triethy ester derivative of phosphoric acid. It is functionally related to an ethanol.

Source: PubChem

US FDA substance register · UNII QIH4K96K7J · registered name Triethyl Phosphate · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Base that dissolves other ingredientsSOLVENT

Safety & regulatory references

Not classified under Korea’s toxic-substance GHS list · existing chemical substance

Source: Korea toxic substances GHS register (NIER)

More data — names, identifiers, properties, test records, literature

Names & identifiers

TRIETHYL PHOSPHATEINCI트라이에틸포스페이트Korean label name (MFDS standard)Phosphoric acid, triethyl esterSynonym

CAS No.chemical registry number: 78-40-0
EC No.EU chemical inventory number: 201-114-5
DTXSIDUS EPA chemical ID: DTXSID8026228
DTXCIDUS EPA compound ID: DTXCID806228

IUPAC: Triethyl phosphate
Molecular formula: C6H15O4P
Molecular weight: 182.156 g/mol

Measured properties

Appearance: liquid
Colour: colourless
Melting/freezing point: -57 ℃
Initial boiling point and range: 215 ℃
Flash point: 116 ℃(o.c.)
Flammability (solid, gas): combustible
Upper/lower flammability or explosive limits: 10 / 1.2 %
Vapour pressure: 0.393 ㎜Hg (@ 25 ℃)
Water solubility: 500000 ㎎/ℓ (@ 25 ℃)
Vapour density: 6.28
Relative density: 1.0695 (@ 20 ℃)
n-Octanol/water partition coefficient (Kow): 0.8
Auto-ignition temperature: 452 ℃
Viscosity: 1.46 cSt (@ 25 ℃)
Molecular weight: 182.16

Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.

Source: KOSHA safety data sheets (Korea)

What products actually use it for

What the 17 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.

Flame retardant7
Solvent3
Plasticizer2
Processing aids not otherwise specified2
Catalyst1
Stabilizing agent1
Intermediate1

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

3 skin studies and 3 eye studies are on record.

Classed as low2

The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 6 studies

Classification not possible
Skin Sensitization · Screening
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
Not classified
Skin Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Moderate or Mild Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to
Category 2
Eye Irritation · Screening