Methyltris(trimethylsiloxy)silane is an organosilicon compound.
How much products actually contain
No product states its amount yet.
Of the products containing it, 608 list it before the 1% line and 45 after it (usually 1% or less).
Products using this ingredient
12 of 627 confirmed · likeliest to carry enough first · See all 627
Dear DahliaDear Dahlia Perfect Designing Shadow Stick
HourglassHourglass Voyeur Eyeshadow Stick
tartetarte maracuja juicy lip plump liner
tartetarte tartelette quick stick™ liner
Half Magic BeautyHalf Magic Beauty SPARKLESTIK EYE CRAYON
Kulfi BeautyKulfi Beauty Lassi Lips Staining Lip Liner
Holika HolikaMellow Gliding Pencil Liner
IOPEUV Shield Tone-up Sun 50ml
PeriperaMood In Shade Eye Stick (Matte/Pearl, 2 Types)
DOINGWHATSKIN-TONE FILTER LOTION
M·A·CM·A·C Chromaline Gel Waterproof Eyeliner - Basic Red
M·A·CM·A·C Chromaline Gel Waterproof Eyeliner - Black Black
Definition
US FDA substance register · UNII S73ZQI0GXM · registered name METHYL TRIMETHICONE · single chemical substance
Methyltris(trimethylsiloxy)silane is an organosilicon compound.
Source: PubChem
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name メチルトリメチコン: 本品は、次の化学式で表される分岐型シロキサン化合物である。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 17928-28-8
- DTXSIDUS EPA chemical ID
- DTXSID9025669
- DTXCIDUS EPA compound ID
- DTXCID105669
- IUPAC
- 1,1,1,3,5,5,5-Heptamethyl-3-[(trimethylsilyl)oxy]trisiloxane
- Molecular formula
- C10H30O3Si4
- Molecular weight
- 310.687 g/mol
What products actually use it for
What the 9 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.
- Softener and conditioner6
- Solvent2
- Diluent1
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
3 skin studies and 1 eye studies are on record.
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 4 studies
- Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: Guidance on Safety Assessment of New Cosmetics (Japan Cosmetic Industry Association, technical materials No.92, 1991 according to - Studies Indicate No Significant Irritation
skin irritation: in vivo · Screening · other guideline: Guidance on Safety Assessment of New Cosmetics (Japan Cosmetic Industry Association, technical materials No. 92) according to - Not likely to be sensitizing
skin sensitisation: in vivo (non-LLNA) · Screening · according to other guideline: Guidance on Safety Assessment of New Cosmetics (Japan Cosmetic Industry Association, technical materials No.92, 1991) - Studies Indicate No Significant Irritation
eye irritation: in vivo · Screening · other guideline: Guidance on Safety Assessment of New Cosmetics (Japan Cosmetic Industry Association, technical materials No. 92, 1991) according to
Source: US EPA CompTox dashboard
Linked databases 15
- Australian Industrial Chemicals Inventory (AICIS)
- China inventory of existing ingredients (IECIC)
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- MFDS (Korea) cosmetic ingredient register 2
- NIST Chemistry WebBook
- PubChem
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata