W221503 Sigma-Aldrich

Butyl sulfide

≥95%, FG

Synonym: 1,1′-Thiobisbutane, Butyl sulfide, Dibutyl sulfide, NSC 8460

  • CAS Number 544-40-1

  • Linear Formula CH3(CH2)3S(CH2)3CH3

  • Molecular Weight 146.29

  •  FEMA Number 2215

  •  Beilstein/REAXYS Number 1732829

  •  EC Number 208-870-5

  •  Council of Europe no. 484

  •  MDL number MFCD00009468

  •  PubChem Substance ID 24900925

  •  Flavis number 12.007



Related Categories A-B, A-D, Alphabetical Listings, Certified Food Grade Products, Flavors and Fragrances,
biological source   synthetic
grade   FG
  follows IFRA guidelines
reg. compliance   EU Regulation 1223/2009
  FDA 21 CFR (117)
  FDA 21 CFR (172.515)
  EU Regulation 1334/2008 & 178/2002
vapor density   5.07 (vs air)
vapor pressure   5.17 mmHg ( 37.7 °C)
assay   ≥95%
refractive index   n20/D 1.452 (lit.)
bp   188-189 °C(lit.)
mp   −76 °C (lit.)
density   0.838 g/mL at 25 °C (lit.)
Documentation   see Safety & Documentation for available documents
Organoleptic   green; sulfurous
food allergen   no known allergens
fragrance allergen   no known allergens


General description

Butyl sulfide is a volatile sulfur compound that can be used as a flavoring agent.


1 kg in glass bottle

4, 8 kg in composite drum

Biochem/physiol Actions

Taste at 5 ppm

Other Notes

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Safety & Documentation

Safety Information

UN 3334
WGK Germany 
Flash Point(F) 
170.6 °F
Flash Point(C) 
77 °C

New Product Offerings
Protocols & Articles


Securing a Traceable Supply Chain for Food Grade Flavor Ingredients

Introduction Defining "Food Grade" Understanding "Food Grade" Versus "Industrial Grade" Top Questions to Ask a Flavor & Fragrances Supplier The Sigma-Aldrich Approach
Dr. Luke Grocholl
Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Food & Beverage, Food Safety, Solvents

Understanding the Complexities of Kosher Ingredients

Introduction What is Kosher Product Considerations for Kosher Certification Kosher's Added Benefit to the Food Industry Sigma-Aldrich's Kosher Experience and Offering
Dr. Luke Grocholl1, Rabbi Gershon Segal

1Dr. Luke Grocholl, Quality Assurance Supervisor, Sigma-Aldrich Flavors & Fragrances
Keywords: Fermentation, Food & Beverage, Safety industry

What going fragrance-free really means

It seems that more and more consumers are demanding fragrance-free products, be it for household cleaning or personal care. Some believe that in doing so, they are purchasing a more natural product. ...
Keywords: Environmental, Evaporation

Related Content

Flavors and Fragrances Quality and Regulatory

From a comprehensive vendor approval process, to the testing of raw material at receipt as well as when product is ready to be shipped; we prove our dedication to supply chain transparency, every day.
Keywords: Allergens, Food Safety, Solvents

Peer-Reviewed Papers


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