Ammonium chromate, 99%

Name: Ammonium chromate, 99%
Brand: Vaqora Chemicals
SKU: VQ-014508

About Ammonium chromate, 99%

Listed under CAS 7788-98-9, Ammonium chromate is a transition metal compound available from Vaqora Chemicals in Extra Pure grade with a typical assay of 99%. Its molecular formula is CrH8N2O4 and its molecular weight is 152.07 g/mol. The IUPAC name is diazanium. Dioxido(dioxo)chromium. Alternative names: Chromic acid ammonium salt and Diammonium chromate.

It is supplied as yellow to orange to gold powder, chunks or granules. Reported physical data include a density of 1.91 g/mL at 25 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span dyes and pigments manufacture, paints, coatings and inks and textile processing. It is used across academic and industrial research.

Available in 100 g, 500 g, 5 kg and 4 x 25 kg packs, Ammonium chromate is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Dyes & pigments manufacture
Paints, coatings & inks
Textile processing

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Ammonium chromate, 99%
Catalogue No.	VQ-014508
CAS Number	7788-98-9
IUPAC name	diazanium;dioxido(dioxo)chromium
Molecular formula	CrH₈N₂O₄
Molecular weight	152.07 g/mol
Exact mass	151.9889
Grade	Extra Pure
Purity / assay	99%
HSN code	28415090
InChIKey	MFFLHUNPSHBKRG-UHFFFAOYSA-P
SMILES	[NH4+].[NH4+].[O-][Cr](=O)(=O)[O-]
PubChem CID	24595

Physical properties
Physical form	Granules
Appearance	Yellow to orange to gold powder, chunks or granules
Density	1.91 g/mL at 25 °C
H-bond donors / acceptors	2 / 4
TPSA	82.3 Å²
UN number	UN 1479
Synonyms	Chromic acid ammonium salt, Diammonium chromate, Neutral ammonium chromate, Chromic acid, diammonium salt, Ammonium chromate(VI), Chromic acid (H2CrO4), diammonium salt, Chromic acid (H2CrO4), ammonium salt (1:2), Cromato amonico, Ammonium chromic acid, Cromato amonico (Spanish), chromic acid diammonium salt, (NH4)2CrO4

Safety & hazard information (GHS)

Oxidiser

Corrosive

Harmful / irritant

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H272May intensify fire, oxidizer
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
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, P271, P272, P273, P280, P284, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P318, P321, P333 + P317, P342 + P316, P362 + P364, P363

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

Frequently asked questions

What is the CAS number of Ammonium chromate, 99%?

The CAS Registry Number of Ammonium chromate, 99% is 7788-98-9. It is also known as Chromic acid ammonium salt, Diammonium chromate, Neutral ammonium chromate.

What is the molecular formula and molecular weight of Ammonium chromate, 99%?

Ammonium chromate, 99% has the molecular formula CrH8N2O4 and a molecular weight of 152.07 g/mol.

Which grade and pack sizes of Ammonium chromate, 99% can I order?

We supply Ammonium chromate, 99% in Extra Pure (99%) grade, in 100 g, 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Ammonium chromate, 99%?

Yes. Every lot of Ammonium chromate, 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 chromate, 99% be shipped internationally?

Yes. Ammonium chromate, 99% is classified as hazardous (UN 1479), 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.