Skip to Content
Merck
All Photos(1)

Key Documents

255459

Sigma-Aldrich

Arsenic(V) oxide hydrate

97%

Synonym(s):

Arsenic pentoxide hydrate

Sign Into View Organizational & Contract Pricing


About This Item

Linear Formula:
As2O5 · xH2O
CAS Number:
Molecular Weight:
229.84 (anhydrous basis)
EC Number:
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

97%

form

powder

composition

Degree of hydration, ~3

density

4.32 g/mL at 25 °C (lit.)

SMILES string

O.O=[As](=O)O[As](=O)=O

InChI

1S/As2O5.H2O/c3-1(4)7-2(5)6;/h;1H2

InChI key

XSIWZGKXZLITBO-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 2 Oral - Acute Tox. 3 Inhalation - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1A

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.

EU REACH SVHC Candidate List

CAS No.

EU REACH Annex XVII (Restriction List)

CAS No.

EU REACH Annex XIV (Authorisation List)

CAS No.

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

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.

Already Own This Product?

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

Visit the Document Library

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