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3-Octylheptamethyltrisiloxane

3-Octylheptamethyltrisiloxane structure

CAS No.: 17955-88-3

Chemical Name:: 3-Octylheptamethyltrisiloxane

Synonyms: CAPRYLYL METHICONE;SS 3408;silsoft34;SILSOFT034;Einecs 241-881-3;OctylsiliconeoilH-034;Heptamethyloctyltrisiloxane;alkyl silicone oil IOTA 1001;3-Octylheptamethyltrisiloxane;Methyloctylbis(trimethylsiloxy)silane

CBNumber:: CB0683867

Molecular Formula:: C15H38O2Si3

Molecular Weight:: 334.72

MDL Number:: MFCD08275351

MOL File:: 17955-88-3.mol

MSDS File:: SDS

Last updated:2026-09-12 18:48:27

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3-Octylheptamethyltrisiloxane Properties

Melting point	-62°C
Boiling point	84°C 0,3mm
Density	0,819 g/cm³
vapor pressure	0.64Pa at 25℃
refractive index	1.4128
Flash point	69°C
Specific Gravity	0.819
Water Solubility	28ng/L at 20℃
Hydrolytic Sensitivity	1: no significant reaction with aqueous systems
Cosmetics Ingredients Functions	SKIN CONDITIONING
Cosmetic Ingredient Review (CIR)	3-OCTYLHEPTAMETHYLTRISILOXANE (17955-88-3)
LogP	9 at 20℃
CAS DataBase Reference	17955-88-3
EWG's Food Scores	1
FDA UNII	Q95M2P1KJL
EPA Substance Registry System	Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl- (17955-88-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS07
Signal word	Warning
Hazard statements	H315-H319-H335
Precautionary statements	P264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P
TSCA	TSCA listed
REACH Registrations	Active

3-Octylheptamethyltrisiloxane price More Price(5)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
aablocks	AA002708	3-Octylheptamethyltrisiloxane 97%	17955-88-3	5g	$25	2026-05-28	Buy
aablocks	AA002708	3-Octylheptamethyltrisiloxane 97%	17955-88-3	25g	$50	2026-05-28	Buy
aablocks	AA002708	3-Octylheptamethyltrisiloxane 97%	17955-88-3	100g	$119	2026-05-28	Buy
aablocks	AA002708	3-Octylheptamethyltrisiloxane 97%	17955-88-3	500g	$481	2026-05-28	Buy
American Custom Chemicals Corporation	ORS0001693	3-OCTYLHEPTAMETHYLTRISILOXANE 98.00%	17955-88-3	500G	$4753.98	2021-12-16	Buy

Product number	Packaging	Price	Buy
AA002708	5g	$25	Buy
AA002708	25g	$50	Buy
AA002708	100g	$119	Buy
AA002708	500g	$481	Buy
ORS0001693	500G	$4753.98	Buy

3-Octylheptamethyltrisiloxane Chemical Properties, Uses, Production

Uses

caprylyl methicone (3-OCTYLHEPTAMETHYLTRISILOXANE) is used for its occlusive properties. It can help retain water on the surface of the skin.

Flammability and Explosibility

Not classified

3-Octylheptamethyltrisiloxane Preparation Products And Raw materials

Raw materials

Preparation Products

3-Octylheptamethyltrisiloxane Suppliers

Global Suppliers ( 95)

Supplier	Tel	Email	Country	ProdList	Advantage
HUNEI MEIBEI NEW MATERIAL Co., Ltd.	18271819653	1483755123@qq.com	China	4735	58
Meryer (Shanghai) Chemical Technology Co., Ltd.	4006356688 18621169109	market03@meryer.com	China	40202	62
Spectrum Chemical Manufacturing Corp.	021-021-021-67601398-809-809-809 15221380277	marketing_china@spectrumchemical.com	China	9643	60
Shanghai T&W Pharmaceutical Co., Ltd.	+86 21 61551611		China	9874	58
Shanghai chuqing Organosilane technology ltd	021-61530618; 18721685818	sales@chuqingtech.com	China	274	55
Bide Pharmatech Ltd.	400-164-7117 18317119277	product02@bidepharm.com	China	40000	60
Shanghai Gileader Advanced Material Technology Co.,Ltd	18516111942	823898732@qq.com	China	1356	56
Shanghai Worldyang Chemical Co.,Ltd.	021-56795766	sales@worldyachem.com	China	9475	58
Hubei Jusheng Technology Co.,Ltd	027-59599241 18871490274	1400878000@qq.com	China	9506	58
Shanghai Enchem Industry Co., Ltd.	15021317485		China	1403	58

Supplier	Advantage
HUNEI MEIBEI NEW MATERIAL Co., Ltd.	58
Meryer (Shanghai) Chemical Technology Co., Ltd.	62
Spectrum Chemical Manufacturing Corp.	60
Shanghai T&W Pharmaceutical Co., Ltd.	58
Shanghai chuqing Organosilane technology ltd	55
Bide Pharmatech Ltd.	60
Shanghai Gileader Advanced Material Technology Co.,Ltd	56
Shanghai Worldyang Chemical Co.,Ltd.	58
Hubei Jusheng Technology Co.,Ltd	58
Shanghai Enchem Industry Co., Ltd.	58

View Latest Price from 3-Octylheptamethyltrisiloxane manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2026-08-08	3-OCTYLHEPTAMETHYLTRISILOXANE 17955-88-3		1kg	97%+	2000kg	Hangzhou ICH Biofarm Co., Ltd
2026-06-30	3-OCTYLHEPTAMETHYLTRISILOXANE 17955-88-3		1kg	99%	10000KGS	Shaanxi Dideu New Materials Co. Ltd
2026-05-28	3-OCTYLHEPTAMETHYLTRISILOXANE 17955-88-3	$10.00	1KG	99.%	10 ton	Hebei Chuanghai Biotechnology Co,.LTD

3-OCTYLHEPTAMETHYLTRISILOXANE
17955-88-3
97%+
Hangzhou ICH Biofarm Co., Ltd

3-OCTYLHEPTAMETHYLTRISILOXANE
17955-88-3
$0.00
99%
Shaanxi Dideu New Materials Co. Ltd

3-OCTYLHEPTAMETHYLTRISILOXANE
17955-88-3
$10.00
99.%
Hebei Chuanghai Biotechnology Co,.LTD

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3-ethylheptamethyltrisiloxane

1of4

Einecs 241-881-3 Heptamethyloctyltrisiloxane SS 3408 3-Octyl-1,1,1,3,5,5,5-HeptamethylTrisiloxane Trimethyl-(methyl-octyl-trimethylsilyloxysilyl)oxysilane 1,1,1,3,5,5,5-Heptamethyl-3-octyltrisiloxane Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-3-octyl- SILSOFT034 1,1,1,3,5,5,5-Heptamethyl-3-octyltrisiloxan silsoft34 1,1,1,3,5,5,5-Heptamethyl-3-octylpentanetrisiloxane Methyloctylbis(trimethylsiloxy)silane rimethyl-(methyl-octyl-trimethylsilyloxysilyl)oxysilane alkyl silicone oil IOTA 1001 1,1,1,3,5,5,5-Heptamethyl-3-Ctyltrisiloxane OctylsiliconeoilH-034 CAPRYLYL METHICONE 3-Octylheptamethyltrisiloxane 17955-88-3 C15H38O2Si3