1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane

Modify Date: 2025-09-04 18:05:02

1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane structure	Common Name	1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane
	CAS Number	56-33-7	Molecular Weight	286.516
	Density	1.0±0.1 g/cm3	Boiling Point	314.4±9.0 °C at 760 mmHg
	Molecular Formula	C₁₆H₂₂OSi₂	Melting Point	-89°C
	MSDS	N/A	Flash Point	118.2±19.1 °C

Name	1,3-diphenyltetramethyldisiloxane
Synonym	More Synonyms

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
InChIKey	YQJPWWLJDNCSCN-UHFFFAOYSA-N
SMILES	C[Si](C)(O[Si](C)(C)c1ccccc1)c1ccccc1
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
CAS#:124-38-9 Carbon dioxide CAS#:766-77-8 Dimethylphenylsilane CAS#:768-33-2 Chlorodimethylp... CAS#:5272-18-4 dimethylphenyls...
CAS#:1825-58-7 Ethoxy(dimethyl... CAS#:1145-98-8 1,1,2,2-Tetrame... CAS#:4648-54-8 Azidotrimethylsilane CAS#:79628-15-2 bis(phenylethyn...
CAS#:18001-18-8 allyldimethylph...
DownStream 10
CAS#:454-57-9 Dimethylphenylf... CAS#:92-93-3 pnb CAS#:778-24-5 Diphenyldimethy... CAS#:92-91-1 4-Acetylbiphenyl
CAS#:7646-75-5 Dimethylphenyls... CAS#:5272-18-4 dimethylphenyls... CAS#:768-33-2 Chlorodimethylp... CAS#:613-37-6 4-Methoxybiphenyl
CAS#:1008-88-4 3-Phenylpyridine CAS#:1145-98-8 1,1,2,2-Tetrame...

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

1,1,3,3-TETRAMETHYL-1,3-DIPHENYL-DISILOXANE

1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane

EINECS 200-265-4

MFCD00039793

Benzene, 1,1'-(1,1,3,3-tetramethyl-1,3-disiloxanediyl)bis-

[dimethyl(phenyl)silyl]oxy-dimethyl-phenylsilane

1,3-Diphenyl-1,1,3,3-Tetramethyl Disiloxane

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

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: 1,1,3,3-Tetramethyl-1,3-diphenyldisiloxane
Price: ￥348.0/5g ￥1038.0/25g
Purity: 97.0%
Delivery: 2 Day
Contact: Liu jia
Email: 2130147988@qq.com

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

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Price: ￥62/1g

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