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Silanes and silicones

Diphenylsilanediol

Also known as Dihydroxydiphenylsilane, Diphenyldihydroxysilane, Silanediol, diphenyl-

CAS 947-42-2Formula C12H12O2SiMolar mass 216.31 g/molEC 213-427-4
GHS signal word: Danger. Pictograms: Flammable, Hazardous to the environment 9 suppliers listed
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Diphenylsilanediol chemical structure, C12H12O2Si, CAS 947-42-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
947-42-2
Formula
C12H12O2Si
Molar mass
216.31 g/mol
Physical form
Solid
HS code
293190
Category
Silanes and silicones
Illustrative photo, closed white HDPE bottles and amber jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Diphenylsilanediol?

Plain description, key identifiers and synonyms

Diphenylsilanediol is a chemical substance with the molecular formula C12H12O2Si and a molar mass of 216.31 g/mol. Its CAS registry number is 947-42-2. The IUPAC name is dihydroxy(diphenyl)silane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dihydroxy(diphenyl)silane
CAS number
947-42-2 CAS number cross-checked
EC number
213-427-4
Molecular formula
C12H12O2Si
UNII
36X37P8NBB
MDL number
MFCD00002101
InChIKey
OLLFKUHHDPMQFR-UHFFFAOYSA-N
InChI
InChI=1S/C12H12O2Si/c13-15(14,11-7-3-1-4-8-11)12-9-5-2-6-10-12/h1-10,13-14H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)[Si](C2=CC=CC=C2)(O)O

Synonyms

  • Dihydroxydiphenylsilane
  • Diphenyldihydroxysilane
  • Silanediol, diphenyl-
  • dihydroxy(diphenyl)silane
  • Silanediol, 1,1-diphenyl-
  • Difenyl-dihydroxysilan
  • Silane, dihydroxydiphenyl-
  • C12H12O2Si
  • Diphenylsilandiol
  • diphenylsilandiole
  • 1,1-Diphenylsilanediol
  • Diphenylsilanediol, 95%
  • 4-16-00-01523 (Beilstein Handbook Reference)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Solidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
216.31 g/molcalc.
Exact mass
216.0607 Dacalc.
LogP (octanol/water)
0.23calc.
Topological polar surface area
40.46 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
15calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccc([SiH2]c2ccccc2)cc1

c1ccc([SiH2]c2ccccc2)cc1

2 rings, 13 atoms, the Diphenylsilane ring system.

715 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H228Flammable solid.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (8)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Diphenylsilanediol suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 9 suppliers
9 of 9 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

9 suppliers in 3 countries

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Diphenylsilanediol price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diphenylsilanediol is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Diphenylsilanediol is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diphenylsilanediol, based on the data on this page

What is Diphenylsilanediol?

Diphenylsilanediol is a chemical substance with the molecular formula C12H12O2Si and a molar mass of 216.31 g/mol. Its CAS registry number is 947-42-2. The IUPAC name is dihydroxy(diphenyl)silane.

What is the CAS number of Diphenylsilanediol?

The CAS registry number of Diphenylsilanediol is 947-42-2.

What is the molecular formula and weight of Diphenylsilanediol?

The molecular formula of Diphenylsilanediol is C12H12O2Si and its molar mass is 216.31 g/mol.

Is Diphenylsilanediol hazardous?

Diphenylsilanediol carries the GHS signal word "Danger". Main hazards: flammable solid, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Diphenylsilanediol?

Diphenylsilanediol is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diphenylsilanediol?

CompoundList lists 9 suppliers of Diphenylsilanediol in China, Japan and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Diphenylsilanediol?

Suppliers quote Diphenylsilanediol on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diphenylsilanediol

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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