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Selenium, mol. (Se8)

Also known as Cyclooctaselenium, Octaselenocane, Octaselenium

CAS 12597-33-0Formula Se8Molar mass 631.68 g/mol
Selenium, mol. (Se8) chemical structure, Se8, CAS 12597-33-0
2D chemical structure

Key facts

What buyers check first

CAS number
12597-33-0
Formula
Se8
Molar mass
631.68 g/mol
HS code
280490
Category
Sulfates and sulfur salts

What is Selenium, mol. (Se8)?

Plain description, key identifiers and synonyms

Cyclooctaselenium is an elemental selenium and a homomonocyclic compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
octaselenocane
CAS number
12597-33-0 CAS number cross-checked
Molecular formula
Se8
InChIKey
JWMKWLJGSKAGLH-UHFFFAOYSA-N
InChI
InChI=1S/Se8/c1-2-4-6-8-7-5-3-1
SMILES (canonical and isomeric)
[Se]1[Se][Se][Se][Se][Se][Se][Se]1

Synonyms

  • Cyclooctaselenium
  • Octaselenocane
  • Octaselenium
  • Octaselenocane #
  • beta-monoclinic cyclooctaselenium

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
631.68 g/molcalc.
Exact mass
639.3322 Dacalc.
LogP (octanol/water)
-3.05calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

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, [Se]1[Se][Se][Se][Se][Se][Se][Se]1

[Se]1[Se][Se][Se][Se][Se][Se][Se]1

1 ring, 8 atoms. This chemical is the scaffold itself.

No other chemical in our database has this scaffold.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Selenium, mol. (Se8) suppliers

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

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Selenium, mol. (Se8) 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

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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Selenium, mol. (Se8) is traded under.

HS 2804.90Indicative HS code

Selenium

World exports in 2024
$92.9M
−12.0% vs 2023, imports $86.8M
2019 to 2024
Top exporters
  1. Japan16.9%
  2. Philippines14.2%
  3. Hong Kong13.9%
Top importers
  1. China28.5%
  2. Hong Kong17.6%
  3. India * partner reported13.9%

* Partner reported figures, a lower bound.

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

The HS code shown for Selenium, mol. (Se8) is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Selenium, mol. (Se8), based on the data on this page

What is Selenium, mol. (Se8)?

Cyclooctaselenium is an elemental selenium and a homomonocyclic compound.

What is the CAS number of Selenium, mol. (Se8)?

The CAS registry number of Selenium, mol. (Se8) is 12597-33-0.

What is the molecular formula and weight of Selenium, mol. (Se8)?

The molecular formula of Selenium, mol. (Se8) is Se8 and its molar mass is 631.68 g/mol.

Is Selenium, mol. (Se8) hazardous?

No GHS hazard classification for Selenium, mol. (Se8) is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Selenium, mol. (Se8)?

Selenium, mol. (Se8) is usually classified under HS code 280490 (Selenium). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Selenium, mol. (Se8)?

Post a free request on CompoundList and suppliers of Selenium, mol. (Se8) will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Selenium, mol. (Se8)?

Suppliers quote Selenium, mol. (Se8) 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 Selenium, mol. (Se8)

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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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