Arsenic(V) Oxide Hydrate

CAS #:

Linear Formula:

As2O5 · xH2O

MDL Number:


EC No.:



(2N) 99% Arsenic(V) Oxide Hydrate
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(3N) 99.9% Arsenic(V) Oxide Hydrate
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(4N) 99.99% Arsenic(V) Oxide Hydrate
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(5N) 99.999% Arsenic(V) Oxide Hydrate
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Arsenic(V) Oxide Hydrate Properties (Theoretical)

Compound Formula As2h2O6
Molecular Weight 247.86
Appearance White Powder
Melting Point 315°C
Boiling Point N/A
Density 4.32 g/cm3
Solubility in H2O N/A
Exact Mass 247.828331
Monoisotopic Mass 247.828331

Arsenic(V) Oxide Hydrate Health & Safety Information

Signal Word Danger
Hazard Statements H300-H331-H350-H410
Hazard Codes T,N
Precautionary Statements P201-P261-P273-P301 + P310 + P330-P304 + P340 + P312-P308 + P313
Flash Point Not applicable
Risk Codes 45-23/25-50/53
Safety Statements 53-45-60-61
RTECS Number N/A
Transport Information UN 1559 6.1 / PGII
WGK Germany 3
GHS Pictograms

About Arsenic(V) Oxide Hydrate

Arsenic(V) Oxide Hydrate is generally immediately available in most volumes, including bulk quantities. American Elements can produce most materials in high purity and ultra high purity (up to 99.99999%) forms and follows applicable ASTM testing standards; a range of grades are available including Mil Spec (military grade), ACS, Reagent and Technical Grade, Food, Agricultural and Pharmaceutical Grade, Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia). We can also produce materials to custom specifications by request, in addition to custom compositions for commercial and research applications and new proprietary technologies. Typical and custom packaging is available, as is additional research, technical and safety (MSDS) data. Please contact us above for information on specifications, lead time and pricing.

Arsenic(V) Oxide Hydrate Synonyms

Arsenic pentoxide hydrate; Arsenic pentaoxide hydrate, Diarsenic pentoxide hydrate, Diarsenic pentaoxide hydrate, Arsenic(5+) oxide hydrate, 255459, 363456

Chemical Identifiers

Linear Formula As2O5 · xH2O
MDL Number MFCD00149146
EC No. 215-116-9
Beilstein/Reaxys No. N/A
Pubchem CID 16211720
SMILES O.O=[As](=O)O[As](=O)=O
InchI Identifier InChI=1S/As2O5.H2O/c3-1(47-2(5)6;/h;1H2

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Arsenic products. Arsenic (atomic symbol: As, atomic number: 33) is a Block P, Group 15, Period 4 element with an atomic radius of 74.92160. Arsenic Bohr ModelThe number of electrons in each of arsenic's shells is 2, 8, 18, 5 and its electron configuration is [Ar] 3d10 4s2 4p3. The arsenic atom has a radius of 119 pm and a Van der Waals radius of 185 pm. Arsenic was discovered in the early Bronze Age, circa 2500 BC. It was first isolated by Albertus Magnus in 1250 AD. In its elemental form, arsenic is a metallic grey, brittle, crystalline, semimetallic solid. Elemental ArsenicArsenic is found in numerous minerals including arsenolite (As2O3), arsenopyrite (FeAsS), loellingite (FeAs2), orpiment (As2S3), and realgar (As4S4). Arsenic has numerous applications as a semiconductor and other electronic applications as indium arsenide, silicon arsenide and tin arsenide. Arsenic is finding increasing uses as a doping agent in solid-state devices such as transistors.


May 29, 2024
Los Angeles, CA
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