Ammonium dichromate, GR 99%+

Name: Ammonium dichromate, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-000816

About Ammonium dichromate, GR 99%+

Ammonium dichromate (CAS 7789-09-5) is a synthetic reagent offered by Vaqora Chemicals (AR grade) with a typical assay of ≥99%. Its molecular formula is Cr2H8N2O7 and its molecular weight is 252.07 g/mol. Its systematic (IUPAC) name is diazanium. Oxido-(oxido(dioxo)chromio)oxy-dioxochromium. Common synonyms include Ammonium bichromate and Ammonium dichromate(VI).

It is supplied as orange to dark orange powder or crystalline powder or chunks. Key physical data: a melting point of 170 °C (dec.). 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.

Key uses span organic synthesis, reaction development, medicinal chemistry and dyes and pigments manufacture. It is used across academic and industrial research and textiles and dyeing.

Available in 500 g, 5 kg and 25 kg packs, Ammonium dichromate is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
Reaction development
Medicinal chemistry
Dyes & pigments manufacture

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Ammonium dichromate, GR 99%+
Catalogue No.	VQ-000816
CAS Number	7789-09-5
IUPAC name	diazanium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
Molecular formula	Cr₂H₈N₂O₇
Molecular weight	252.07 g/mol
Exact mass	251.9142
Grade	AR
Purity / assay	≥99%
HSN code	28415090
InChIKey	JOSWYUNQBRPBDN-UHFFFAOYSA-P
SMILES	[NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-]
PubChem CID	24600

Physical properties
Physical form	Powder
Appearance	Orange to dark orange powder or crystalline powder or chunks
Melting point	170 °C (dec.)
H-bond donors / acceptors	2 / 7
TPSA	126 Å²
UN number	UN 1439
Synonyms	Ammonium bichromate, Ammonium dichromate(VI), Ammonium dichromate (VI), Bichromate d'ammonium, Dichromic acid, diammonium salt, Ammonio (bicromato di), Ammonio (dicromato di), Ammonium chromate ((NH4)2Cr2O7), Ammonium (dichromate d'), Chromic acid (H2Cr2O7), diammonium salt, Dichromic acid (H2Cr2O7), diammonium salt, Chromic acid (H2Cr2O7), ammonium salt (1:2)

Safety & hazard information (GHS)

Oxidiser

Corrosive

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H272May intensify fire, oxidizer
H301Toxic if swallowed
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H340May cause genetic defects
H350May cause cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P203, P210, P220, P233, P260, P261, P264, P270, P271, P272, P273, P280, P284, P301 + P316, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P318, P319, P320

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 7789-09-5

Ammonium dichromate, 99%

CAS: 7789-09-5
Formula: Cr₂H₈N₂O₇
MW: 252.07 g/mol

VQ-014509

EP / ACS / AR

Ammonium dichromate, EP, ACS, AR

CAS: 7789-09-5
Formula: Cr₂H₈N₂O₇
MW: 252.07 g/mol

VQ-047081

Frequently asked questions

What is the CAS number of Ammonium dichromate, GR 99%+?

The CAS Registry Number of Ammonium dichromate, GR 99%+ is 7789-09-5. It is also known as Ammonium bichromate, Ammonium dichromate(VI), Ammonium dichromate (VI).

What is the molecular formula and molecular weight of Ammonium dichromate, GR 99%+?

Ammonium dichromate, GR 99%+ has the molecular formula Cr2H8N2O7 and a molecular weight of 252.07 g/mol.

Which grade and pack sizes of Ammonium dichromate, GR 99%+ can I order?

We supply Ammonium dichromate, GR 99%+ in AR (≥99%) grade, in 500 g, 5 kg, 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ammonium dichromate, GR 99%+?

Yes. Every lot of Ammonium dichromate, GR 99%+ 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 Ammonium dichromate, GR 99%+ be shipped internationally?

Yes. Ammonium dichromate, GR 99%+ is classified as hazardous (UN 1439), 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.