CompoundList
Sign in
Sulfates and sulfur salts

Selenium-78

Also known as 78Se isotope, Se-78 isotope, 78Se

CAS 14833-16-0Formula SeMolar mass 77.92 g/mol
Get quotes Safety data
Element with atomic number and standard atomic weight

Key facts

What buyers check first

All properties
CAS number
14833-16-0
Formula
Se
Molar mass
77.92 g/mol
HS code
284443
Category
Sulfates and sulfur salts

What is Selenium-78?

Plain description, key identifiers and synonyms

Selenium-78 is a chemical substance with the molecular formula Se and a molar mass of 77.92 g/mol. Its CAS registry number is 14833-16-0.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
selenium-78
CAS number
14833-16-0 CAS number cross-checked
Molecular formula
Se
InChIKey
BUGBHKTXTAQXES-BJUDXGSMSA-N
InChI
InChI=1S/Se/i1-1
Canonical SMILES
[Se]
Isomeric SMILES
[78Se]

Synonyms

  • 78Se isotope
  • Se-78 isotope
  • 78Se
  • Selenium, isotope of mass 78
  • Selenium Isotopic Standard: Se @ 10 microg/mL in 2% HNO3 (Enriched in Se-78)
  • Selenium-78 isotope
  • Isotope:78Se
  • 78Se (isotope)
  • (~78~Se)selenium
  • Isotope:Selenium-78

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
77.92 g/molcalc.
Exact mass
77.9173 Dacalc.
LogP (octanol/water)
-0.38calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

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-78 suppliers

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

No supplier listings yet

Post one free request and suppliers who make or trade Selenium-78 can send you quotes. Your contact details stay private until you accept a quote.

Request quotesSell this chemical

Selenium-78 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.

Get latest price

Uses and applications

What the substance is used for, by industry and function

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-78 is traded under.

HS 2844.43Indicative HS code

Radioactive elements and isotopes and compounds other than those of subheading 284410…

World exports in 2024
$2.19B
+8.8% vs 2023, imports $2.53B
2022 to 2024
Top exporters
  1. Canada32.1%
  2. Netherlands17.0%
  3. Germany11.4%
Top importers
  1. United States37.8%
  2. Germany8.4%
  3. China5.8%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Selenium-78 is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Selenium-78, based on the data on this page

What is Selenium-78?

Selenium-78 is a chemical substance with the molecular formula Se and a molar mass of 77.92 g/mol. Its CAS registry number is 14833-16-0.

What is the CAS number of Selenium-78?

The CAS registry number of Selenium-78 is 14833-16-0.

What is the molecular formula and weight of Selenium-78?

The molecular formula of Selenium-78 is Se and its molar mass is 77.92 g/mol.

What is Selenium-78 used for?

Known uses and roles of Selenium-78 include isotope-labelled compounds in research and laboratory.

Is Selenium-78 hazardous?

No GHS hazard classification for Selenium-78 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-78?

Selenium-78 is usually classified under HS code 284443 (Radioactive elements and isotopes and compounds other than those of subheading 284410…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Selenium-78?

Post a free request on CompoundList and suppliers of Selenium-78 will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Selenium-78?

Suppliers quote Selenium-78 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-78

Get quotes for Selenium-78

Post one free request with your grade, quantity and destination. Matching suppliers send quotes you can compare side by side.
Post a request Sell Selenium-78
Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
Embed this structure on your websiteShow code

Paste this code into your page to show the 2D structure of Selenium-78 with a 3D view, its CAS number and a link back to this page. Free to use with the link kept.

<iframe src="https://www.compoundlist.com/embed/structure/selenium-78-14833-16-0" title="Selenium-78 structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>
Preview the embed

Explore more in Sulfates and sulfur salts or HS code 284443

Price on request
Free quotes, contact stays private
Get quotes