234729 Sigma-Aldrich

Triton X-100

Synonym: t-Octylphenoxypolyethoxyethanol, Polyethylene glycol tert-octylphenyl ether, Polyoxyethylene (10) isooctylphenyl ether

  • CAS Number 9002-93-1

  • Linear Formula 4-(C8H17)C6H4(OCH2CH2)nOH, n~10



Related Categories Antigen-Vaccine Preparation, Biochemicals and Reagents, Cell Culture, Detergents, Detergents A to M,
vapor density   >1 (vs air)
vapor pressure   <1 mmHg ( 20 °C)
description   non-ionic
form   liquid
impurities   <3% polyethylene glycol
refractive index   n20/D 1.49(lit.)
solubility   water: soluble
density   1.07 g/mL at 25 °C(lit.)
HLB   13


Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Legal Information

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

Other Notes

This product has been replaced by X100-Sigma-Aldrich | Triton X-100 laboratory grade

Price and Availability

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
UN 3082 9 / PGIII
WGK Germany 
Flash Point(F) 
483.8 °F
Flash Point(C) 
251 °C

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option:
What is the concentration of the Triton® X-100, Product 234729?
This product is sold as 100% material, not diluted in any solvent.  Using an approximate MW of 625, an approximate molar value is 1.7 M.
What is the molecular weight of Triton X-100?
Based on an average of 9-10 ethylene oxide units per molecule, the molecular weight of Triton X-100 is 625 g/mol.
What concentration of Triton® X-100, Product 234729, is typically used to lyse cells?
0.1 % solution of X-100 is sufficient for lysing cells.
Can I autoclave Triton® X-100, Product 234729?
Triton X-100 solutions are stable to autoclaving.  At certain concentrations, the solutions may be cloudy but dispersible above the cloud point. However, the solution should clear with stirring upon cooling.
Does Triton® X-100, Product 234729, have any UV absorbance?
Triton X-100 does have UV absorbance at 280 nm, which will interfere with the UV determination of proteins.
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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