Arsenic(III) oxide, primary standard ACS, 99.… 1327-53-3

Name: Arsenic(III) oxide, primary standard ACS, 99.95-100.05%
Brand: Vaqora Chemicals
SKU: VQ-015165

About Arsenic(III) oxide, primary standard ACS, 99.95-100.05%

Listed under CAS 1327-53-3, Arsenic(III) oxide is a main-group metal compound available from Vaqora Chemicals in ACS grade with a typical assay of 99.95–100.05%. Its molecular formula is As2O3 and its molecular weight is 197.84 g/mol. Its systematic (IUPAC) name is bis(arsenic(3+)). Tris(oxygen(2-)). Common synonyms include Arsenic trioxide and Arsenous acid primary standard.

In its supplied form it is a white powder. Key physical data: a density of 3.74 g/cm3. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for materials research and chemical synthesis. Typical end-use sectors are academic and industrial research.

We offer Arsenic(III) oxide in 25 g, 100 g, 125 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Materials research
Chemical synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Arsenic(III) oxide, primary standard ACS, 99.95-100.05%
Catalogue No.	VQ-015165
CAS Number	1327-53-3
IUPAC name	bis(arsenic(3+));tris(oxygen(2-))
Molecular formula	As₂O₃
Molecular weight	197.84 g/mol
Exact mass	197.8279
Grade	ACS
Purity / assay	99.95–100.05%
HSN code	28112920
InChIKey	QTLQKAJBUDWPIB-UHFFFAOYSA-N
SMILES	[O-2].[O-2].[O-2].[As+3].[As+3]
PubChem CID	14888

Physical properties
Physical form	Powder
Appearance	White powder
Density	3.74 g/cm3
H-bond donors / acceptors	0 / 3
TPSA	3 Å²
UN number	UN 1561
Synonyms	Arsenic trioxide, Arsenous acid primary standard, Arsenic oxide (As2O3), Arseni trioxydum, Arsenious trioxide, Claudetite, Oxyde Arsenieux, Arsenious Acid Anhydride, Acide arsenieux, Arsenic blanc, Arsenigen saure, Anhydride arsenieux

Safety & hazard information (GHS)

Corrosive

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H300Fatal if swallowed
H314Causes severe skin burns and eye damage
H350May cause cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P203, P260, P264, P270, P273, P280, P301 + P316, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P318, P321, P330, P363, P391, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 1327-53-3

Arsenic(III) oxide, 99.999%

CAS: 1327-53-3
Formula: As₂O₃
MW: 197.84 g/mol

VQ-015163

Synthesis

Arsenic(III) oxide, 99%

CAS: 1327-53-3
Formula: As₂O₃
MW: 197.84 g/mol

VQ-015162

AR

Arsenic(III) oxide, GR 99%+

CAS: 1327-53-3
Formula: As₂O₃
MW: 197.84 g/mol

VQ-015164

Technical

Arsenic(III) oxide, technical grade ≥95.0%

CAS: 1327-53-3
Formula: As₂O₃
MW: 197.84 g/mol

VQ-046960

Frequently asked questions

What is the CAS number of Arsenic(III) oxide, primary standard ACS, 99.95-100.05%?

The CAS Registry Number of Arsenic(III) oxide, primary standard ACS, 99.95-100.05% is 1327-53-3. It is also known as Arsenic trioxide, Arsenous acid primary standard, Arsenic oxide (As2O3).

What is the molecular formula and molecular weight of Arsenic(III) oxide, primary standard ACS, 99.95-100.05%?

Arsenic(III) oxide, primary standard ACS, 99.95-100.05% has the molecular formula As2O3 and a molecular weight of 197.84 g/mol.

Which grade and pack sizes of Arsenic(III) oxide, primary standard ACS, 99.95-100.05% can I order?

We supply Arsenic(III) oxide, primary standard ACS, 99.95-100.05% in ACS (99.95–100.05%) grade, in 25 g, 100 g, 125 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Arsenic(III) oxide, primary standard ACS, 99.95-100.05%?

Yes. Every lot of Arsenic(III) oxide, primary standard ACS, 99.95-100.05% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Arsenic(III) oxide, primary standard ACS, 99.95-100.05% be shipped internationally?

Yes. Arsenic(III) oxide, primary standard ACS, 99.95-100.05% is classified as hazardous (UN 1561), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.