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Impurities and reference standards

trans-Stilbene

Also known as (E)-Stilbene, (E)-1,2-Diphenylethene, trans-1,2-Diphenylethylene

CAS 103-30-0Formula C14H12Molar mass 180.25 g/molEC 203-098-5
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment 72 suppliers listed
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trans-Stilbene chemical structure, C14H12, CAS 103-30-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Crystals from 95% ethanol
Melting point
124 °C
Boiling point
306 to 307
Density
0.9707
Solubility
Freely sol in benzene, ether, practically insol in water, sol in 90 parts cold alc, 13 p…
HS code
290290
Category
Impurities and reference standards
UN number
UN 3077
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is trans-Stilbene?

Plain description, key identifiers and synonyms

Stilbene is a member of benzenes and an olefinic compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-stilbene
CAS number
103-30-0 CAS number cross-checkedOther or deprecated CAS: 588-59-0
EC numbers
203-098-5, 209-621-3
Molecular formula
C14H12
UNII
3FA7NW80A0, W1WNW14Z2I
MDL number
MFCD00064300
InChIKey
PJANXHGTPQOBST-VAWYXSNFSA-N
InChI
InChI=1S/C14H12/c1-3-7-13(8-4-1)11-12-14-9-5-2-6-10-14/h1-12H/b12-11+
Canonical SMILES
C(=Cc1ccccc1)c1ccccc1
Isomeric SMILES
C1=CC=C(C=C1)/C=C/C2=CC=CC=C2

Synonyms

  • (E)-Stilbene
  • (E)-1,2-Diphenylethene
  • trans-1,2-Diphenylethylene
  • (E)-1,2-Diphenylethylene
  • Toluylene
  • trans-Diphenylethene
  • trans-1,2-Diphenylethene
  • Benzene, 1,1'-(1E)-1,2-ethenediylbis-
  • trans-alpha,beta-Diphenylethylene
  • Benzene, 1,1'-(1,2-ethenediyl)bis-, (E)-
  • Stilbene, trans-
  • 1,1'-(E)-ethene-1,2-diyldibenzene
  • [(E)-2-Phenylethenyl]benzene
  • ((E)-2-phenylethenyl)benzene
  • 1,1'-((1E)-ethene-1,2-diyl)dibenzene
  • 1,1'-[(1E)-ethene-1,2-diyl]dibenzene
  • Stilbene, (E)-
  • 1,2-Diphenylethene
  • Stilben
  • [(1E)-2-phenylethenyl]benzene
  • 1,1'-(1,2-Ethenediyl)bis[benzene]
  • Ketoprofen Impurity 16
  • alpha,beta-Diphenylethylene
  • stillbene
  • (E)-1,1'-(1,2-Ethenediyl)bisbenzene
Show all 35 synonyms
  • Stilbenes
  • trans stilbene
  • 1,1'-(ethene-1,2-diyl)dibenzene
  • E-stilbene
  • E-1,2-diphenylethene
  • trans-Stilbene, 96%
  • 1,trans-2-Diphenylethene
  • Stilbene trans-form
  • 1,trans-2-Diphenylethylene
  • 4-05-00-02160 (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

Appearance
Crystals from 95% ethanolexp.
Melting point
124 °Cexp.
Boiling point
306 to 307exp.
Density
0.9707exp.
Solubility
Freely sol in benzene, ether, practically insol in water, sol in 90 parts cold alc, 13 parts boiling alcexp.
Vapour pressure
8.81 × 10⁻⁴ mm Hg @ 25 °Cexp.

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
180.25 g/molcalc.
Exact mass
180.0939 Dacalc.
LogP (octanol/water)
3.86calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
2calc.
Heavy atoms
14calc.
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, C(=Cc1ccccc1)c1ccccc1

C(=Cc1ccccc1)c1ccccc1

2 rings, 14 atoms, the Stilbene ring system.

2,005 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H319Causes serious eye irritation.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P330Rinse mouth.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077

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

trans-Stilbene suppliers

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

All 72 suppliers
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Where suppliers are based

72 suppliers in 13 countries

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trans-Stilbene price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Mfr of dyes and optical bleaches, crystals are used as phosphors and scintillators.

How it is made

Trans-form prepd by Clemmensen redn of benzoin: Shriner, Berger, Org Syn Coll Vol III, 786 (1955), cis-form by copper-chromite decarboxylation of alpha-phenylcinnamic acid: Buckles, Wheeler, Org Synth Coll Vol IV, 857 (1963).

Synthesis of cis- and trans-forms by Wittig reaction and decarboxylation of phenylcinnamic acids: Wheeler, Batlle de Pabon, J Org Chem 30, 1473 (1965).

By passing toluene over hot lead oxide. Method of purification: crystallization, zone melting used for very pure crystals.

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 trans-Stilbene is traded under.

HS 2902.90Indicative HS code

Cyclic hydrocarbons, other

World exports in 2024
$612M
−6.1% vs 2023, imports $670M
2019 to 2024
Top exporters
  1. China28.0%
  2. Germany13.9%
  3. India * partner reported12.6%
Top importers
  1. Germany11.1%
  2. United States10.6%
  3. South Korea8.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about trans-Stilbene, based on the data on this page

What is trans-Stilbene?

Stilbene is a member of benzenes and an olefinic compound.

What is the CAS number of trans-Stilbene?

The CAS registry number of trans-Stilbene is 103-30-0. Other or deprecated CAS numbers: 588-59-0.

What is the molecular formula and weight of trans-Stilbene?

The molecular formula of trans-Stilbene is C14H12 and its molar mass is 180.25 g/mol.

What is trans-Stilbene used for?

Mfr of dyes and optical bleaches, crystals are used as phosphors and scintillators.

Is trans-Stilbene hazardous?

trans-Stilbene carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes serious eye irritation, 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 trans-Stilbene?

trans-Stilbene is usually classified under HS code 290290 (Cyclic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy trans-Stilbene?

CompoundList lists 72 suppliers of trans-Stilbene in China, United States, Germany, United Kingdom and 9 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of trans-Stilbene?

Suppliers quote trans-Stilbene 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 trans-Stilbene

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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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