Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Price: ￥118.0/25ml ￥318.0/100ml
Purity: 98.0%
Stocking Period: 2 Day
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Bis(trimethylsiloxy)methylsilane TOP1 supplier
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: bis(trimethylsiloxy)methylsilane
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Price: ￥Inquiry/25kg
Purity: 99.0%
Stocking Period: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

1873-88-7

1873-88-7 structure

1873-88-7 structure

Name: 1,1,1,3,5,5,5-Heptamethyltrisiloxane
Chemical Name: methyl-bis(trimethylsilyloxy)silicon
CAS Number: 1873-88-7
Molecular Formula: C₇H₂₂O₂Si₃
Molecular Weight: 222.505
Catalog: Chemical reagent Organic reagent Siloxane
Create Date: 2018-06-01 08:00:00
Modify Date: 2025-08-25 18:30:51

Name	methyl-bis(trimethylsilyloxy)silicon
Synonyms	(TMSO)2MeSi EINECS 217-496-1 HSi(OSiMe3)2Me Trisiloxane,1,1,1,3,5,5,5-heptamethyl Bis(trimethylsiloxy)methylsilane Methylpolysilicone HSi(OTMS)2Me Methylbis(trimethylsilyloxy)silane Trisiloxane, 1,1,1,3,5,5,5-heptamethyl- MFCD00048000 (Me3SiO)2MeSiH 1,1,1,3,5,5,5-Heptamethyltrisiloxane HSi(OSMe3)2Me

Density	0.819 g/mL at 25 °C(lit.)
Boiling Point	163.8±23.0 °C at 760 mmHg
Melting Point	<0ºC
Molecular Formula	C₇H₂₂O₂Si₃
Molecular Weight	222.505
Flash Point	52.8±22.6 °C
Exact Mass	222.092758
PSA	18.46000
LogP	5.32
Vapour Pressure	2.7±0.3 mmHg at 25°C
Index of Refraction	n20/D 1.382(lit.)
Stability	Stable. Flammable. Incompatible with strong oxidizing agents.

Symbol	GHS02, GHS07
Signal Word	Danger
Hazard Statements	H225-H315-H319-H335
Precautionary Statements	P210-P305 + P351 + P338-P370 + P378-P403 + P235
Hazard Codes	Xi:Irritant;
Risk Phrases	R10;R36/37/38
Safety Phrases	S26-S36
RIDADR	UN 1993 3/PG 2
WGK Germany	3
HS Code	2934999090

Precursor 7
75-54-7 107-46-0 75-77-4 18027-10-6
6166-86-5 1438-82-0 110-54-3
DownStream 9
42292-18-2 286938-67-8 1825-62-3 2078-12-8
7422-52-8 5356-85-4 111-65-9 17955-88-3
111-67-1

HS Code	2934999090
Summary	2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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