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

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1,3-Diphenyltetramethyldisiloxane
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

56-33-7

56-33-7 structure

56-33-7 structure

Name: 1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane
Chemical Name: 1,3-diphenyltetramethyldisiloxane
CAS Number: 56-33-7
Molecular Formula: C₁₆H₂₂OSi₂
Molecular Weight: 286.516
Catalog: Chemical reagent Silane reagent
Create Date: 2019-01-04 14:28:25
Modify Date: 2025-09-04 18:05:02

Name	1,3-diphenyltetramethyldisiloxane
Synonyms	1,1,3,3-TETRAMETHYL-1,3-DIPHENYL-DISILOXANE 1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane EINECS 200-265-4 MFCD00039793 [dimethyl(phenyl)silyl]oxy-dimethyl-phenylsilane 1,3-Diphenyl-1,1,3,3-Tetramethyl Disiloxane

Density	1.0±0.1 g/cm3
Boiling Point	314.4±9.0 °C at 760 mmHg
Melting Point	-89°C
Molecular Formula	C₁₆H₂₂OSi₂
Molecular Weight	286.516
Flash Point	118.2±19.1 °C
Exact Mass	286.120911
PSA	9.23000
LogP	6.46
Vapour Pressure	0.0±0.6 mmHg at 25°C
Index of Refraction	1.520
Storage condition	2~8°C

CHEMICAL IDENTIFICATION

RTECS NUMBER :: JM9236000

CHEMICAL NAME :: Disiloxane, 1,3-diphenyl-1,1,3,3-tetramethyl-

CAS REGISTRY NUMBER :: 56-33-7

BEILSTEIN REFERENCE NO. :: 2943229

LAST UPDATED :: 199709

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C16-H22-O-Si2

MOLECULAR WEIGHT :: 286.56

WISWESSER LINE NOTATION :: 1-SI-1&R&O-SI-1&1&R

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 700 mg/kg

SEX/DURATION :: male 7 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - prostate, seminal vesicle, Cowper's gland, accessory glands

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 21,55,1972

Hazard Codes	Xi
Risk Phrases	36/37/38
Safety Phrases	S24/25-S36-S26
RTECS	JM9236000
HS Code	2934999090

Precursor 9
124-38-9 766-77-8 768-33-2 5272-18-4
1825-58-7 1145-98-8 4648-54-8 79628-15-2
18001-18-8
DownStream 10
454-57-9 92-93-3 778-24-5 92-91-1
7646-75-5 5272-18-4 768-33-2 613-37-6
1008-88-4 1145-98-8

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

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.