Skip to Content
Merck
All Photos(2)

Key Documents

View All Documentation

Safety Information

481629

Sigma-Aldrich

Copper(I) selenide

greener alternative

99.95% trace metals basis

Synonym(s):

Cuprous selenide, Dicopper monoselenide, Dicopper selenide

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Linear Formula:
Cu2Se
CAS Number:
20405-64-5
Molecular Weight:
206.05
EC Number:
243-796-7
MDL number:
MFCD00049908
UNSPSC Code:
12352300
PubChem Substance ID:
24871772
NACRES:
NA.23

Quality Level

100

Assay

99.95% trace metals basis

form

powder and chunks

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

density

6.84 g/mL at 25 °C (lit.)

greener alternative category

Enabling,

SMILES string

[Cu][Se][Cu]

InChI

1S/2Cu.Se

InChI key

KTLOQXXVQYUCJU-UHFFFAOYSA-N

General description

Copper selenide is an ionic conductor. 1 In nature, it occurs as mineral berzelianite. 2 Copper selenide may be prepared galvanically by coupled copper metal oxidation and Se reduction in alkaline selenosulfate (Na2SeSO3).
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Application

Copper(I) selenide (Cu2Se) is a semiconductor material, which exists in cubic, tetragonal or orthorhombic forms. It forms thin films, which can be used as solar cell materials, optical filters, thermoelectric converters, electro-optical devices, and microwave shield coatings.

Packaging

Packaged in poly bottles

Signal Word

Danger

Hazard Statements

H301 + H331,H373,H410

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

Storage Class Code

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Poisonous substance

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

481629-BULK:
481629-VAR:
481629-25G:4548173158990
481629-5G:4548173159003

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCK6300
MKCF1266
MKBJ4711V
MKBJ2556V
MKBF0499V

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Modified chemical deposition and physico-chemical properties of copper (I) selenide thin films
Pathan HM, et al.
Applied Surface Science, 211(1-4), 48-56 (2003)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service