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Triton X-114

(1,1,3,3-Tetramethylbutyl)phenyl-polyethylene glycol, Polyethylene glycol tert-octylphenyl ether
Linear Formula:
(C2H4O)n C14H22O, n = 7 or 8
CAS Number:
MDL number:
PubChem Substance ID:

Quality Level



mol wt

average mol wt 537


≤0.001% peroxides (as H2O2)
≤1% water

ign. residue


refractive index

n20/D 1.488 (lit.)
n20/D 1.495


0.2 mM (20-25°C)

transition temp

pour point ~−9 °C
cloud point 23 °C


1.052 g/mL at 20 °C
1.058 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤15 mg/kg
K: ≤500 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Na: ≤500 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg



SMILES string




InChI key


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General description

Triton X-114 is a nonionic detergent. It is a good detergent for solubilizing membranes having reversible phase-separation property useful for the separation of intrinsic membrane proteins. Solution of Triton X-114 is homogeneous at 0°C but phase separation into aqueous phase and a detergent phase occurs above 20°C. Phase separation of proteins in solutions of Triton X-114 has been investigated. This octylphenol ethoxylate is compatible with anionic, cationic, and other nonionic surfactants and chemically stable in most acidic & alkaline solutions.


Triton X-114 has been used:
  • In phase separation of integral membrane proteins
  • In the purification of bacterial inclusion bodies
  • To study the clouding phenomenon in promethazine hydrochloride, an amphiphilic phenothiazine drug
  • To partition conditioned media into insoluble and soluble phases before Western blotting
  • For solubilization of phosphatidylinositol 4-phosphate 5-kinase from bovine brain


1 L in glass bottle
250 mL in glass bottle

Legal Information

Triton is a trademark of The Dow Chemical Company or an affiliated company of Dow

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2

Storage Class Code

10 - Combustible liquids



Flash Point(F)

483.8 °F

Flash Point(C)

251 °C

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Expression, purification and immunological characterization of the transforming protein E7, from cervical cancer-associated human papillomavirus type 16.
Fernando G J P, et al.
Clinical and Experimental Immunology, 115(3), 397-397 (1999)
Identification of a new 80 k isoform of phosphatidylinositol 4-phosphate 5-kinase from bovine brain.
Schmidt M, et al.
Febs Letters, 325(3), 201-204 (1993)
M Schmidt et al.
FEBS letters, 325(3), 201-204 (1993-07-05)
Phosphatidylinositol 4-phosphate 5-kinase is associated with bovine brain microsomes to an extent of approximately 65% of the total cellular enzyme activity. This membrane-associated kinase activity can be solubilized with Triton X-114. Following polyacrylamide gel electrophoresis in the presence of SDS...
Extraction and identification of human platelet integral membrane proteins using Triton X-114.
P J Newman et al.
Thrombosis research, 27(2), 221-224 (1982-07-15)
Cloud point variation of amphiphilic drug promethazine hydrochloride with added surfactants.
Naqvi A Z and Khatoon S
Colloids and Surfaces. B, Biointerfaces, 88(2), 568-573 (2011)

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