Ingredient Dictionary

DIMETHYL SULPHIDE

Dimethyl sulfide is a methyl sulfide in which the sulfur atom is substituted by two methyl groups.

Definition

Dimethyl sulfide is a methyl sulfide in which the sulfur atom is substituted by two methyl groups. It is produced naturally by some marine algae. It has a role as a marine metabolite, an Escherichia coli metabolite, a bacterial xenobiotic metabolite, an EC 3.5.1.4 (amidase) inhibitor and an algal metabolite.

Source: PubChem

US FDA substance register · UNII QS3J7O7L3U · registered name METHYL SULFIDE · single chemical substance

Source: US FDA Unique Ingredient Identifier (UNII)

Cosmetic roles

Gives the product a scentPERFUMING

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

DIMETHYL SULPHIDEINCIMethane, 1,1′-thiobis-Synonym

CAS No.chemical registry number: 75-18-3
EC No.EU chemical inventory number: 200-846-2
DTXSIDUS EPA chemical ID: DTXSID9026398
DTXCIDUS EPA compound ID: DTXCID106398

IUPAC: (Methylsulfanyl)methane
Molecular formula: C2H6S
Molecular weight: 62.13 g/mol

Measured properties

Appearance: liquid
Colour: colourless
Odour threshold: 0.001 ppm
Melting/freezing point: -98 ℃
Initial boiling point and range: 37.3 ℃
Flash point: -49 ℃
Upper/lower flammability or explosive limits: 19.7 / 2.2 %
Vapour pressure: 53.2 ㎪ (20℃)
Water solubility: 2.2 g/100㎖ (25℃)
Vapour density: 2.1
Relative density: 0.85
n-Octanol/water partition coefficient (Kow): 0.84
Auto-ignition temperature: 205 ℃
Molecular weight: 62.1

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 14 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.

Fragrance6
Intermediate2
Flavouring and nutrient2
Deodorizer2
Processing aids not otherwise specified2

Source: US EPA CompTox dashboard

Irritation and sensitisation studies

6 skin studies and 4 eye studies are on record.

Classed as moderate1Classed as low3

The studies disagree (the most common conclusion covers 25%), so they do not establish that this ingredient is irritating. These tests are on the raw material itself; irritation at the amount in a finished product is a different question.

See all 10 studies

Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · OECD Guideline 404 (Acute Dermal Irritation / Corrosion) according to
Not classified
Skin Irritation · Screening
Classification not possible
Skin Sensitization · Screening
Category 6.3B (Category 3)
Skin Irritation · Read Across
Skin corrosion/irritation - Category 2
Skin Irritation · Screening
Not likely to be sensitizing
skin sensitisation: in vivo (LLNA) · Screening · according to OECD Guideline 429 (Skin Sensitisation: Local Lymph Node Assay)
Category 2B
Eye Irritation · Screening
Serious eye damage/eye irritation - Category 2
Eye Irritation · Screening
Category 6.4A (Category 2A)
Eye Irritation · Read Across
Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · OECD Guideline 405 (Acute Eye Irritation / Corrosion) according to