3D Mol Similar

AMMONIUM CHROMATE

: Iupac Name：azane;dihydroxy(dioxo)chromium; CAS No.: 7788-98-9; Molecular Weight：152.07; Modify Date.: 2023-02-09 10:19; Introduction:
AMMONIUM CHROMATE, with the chemical formula (NH4)2CrO4 and CAS registry number 7788-98-9, is a compound known for its applications in various industries. This yellow crystalline solid is characterized by its ammonium and chromate ions. It is commonly used as a corrosion inhibitor in metal coatings and as a catalyst in chemical reactions. AMMONIUM CHROMATE is also used in the production of pigments, dyes, and ceramics. However, it is important to note that AMMONIUM CHROMATE is highly toxic and poses serious health risks if ingested, inhaled, or in contact with the skin. Therefore, proper safety precautions should be taken when handling this compound.
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1. Names and Identifiers

: 1.1 Name; AMMONIUM CHROMATE; 1.2 Synonyms; 1,2-Cyclopropanedicarboxylic acid, 3,3-dimethyl-, diammonium salt Ammonium 3,3-dimethylcyclopropane-1,2-dicarboxylate Ammonium chronate ammoniumchromate(vi) chromicacid(h2cro4),diammoniumsalt chromicacid[h2cro4],diammoniumsalt Diammonium 3,3-dimethyl-1,2-cyclopropanedicarboxylate diammoniumchromate MFCD00015958 neutralammoniumchromate; View all

1.3 CAS No.: 7788-98-9

1.4 CID: 16211153

1.5 EINECS(EC#): 232-138-4

1.6 Molecular Formula: CrH8N2O4 (isomer)

1.7 Inchi: InChI=1S/Cr.2H3N.2H2O.2O/h;2*1H3;2*1H2;;/q+2;;;;;;/p-2

1.8 InChIkey: FEIXNIOTSKFSAZ-UHFFFAOYSA-L

1.9 Canonical Smiles: N.N.O[Cr](O)(=O)=O

1.10 Isomers Smiles: N.N.O[Cr](=O)(=O)O

2. Properties

2.1 Density: 1.91 g/mL at 25 °C (lit.)

2.1 Melting point: 180°C (dec.)

3. Safety and Handling

3.1 Hazard Codes: O,T,N

3.1 Risk Statements: 49-8-43-50/53-34

3.1 Safety Statements: 53-17-45-60-61-36/37/39-26

3.1 RIDADR: UN 1479 5.1/PG 2

3.1 WGK Germany: 3

3.1 RTECS: GB2880000

3.1 Toxicity: Inorganic Compound; Chromium Compound; Pollutant; Industrial/Workplace Toxin; Synthetic Compound

4. MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Skin sensitization, Category 1

Carcinogenicity, Category 1B

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 1

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word	Danger
Hazard statement(s)	H317 May cause an allergic skin reaction H350 May cause cancer H410 Very toxic to aquatic life with long lasting effects
Precautionary statement(s)
Prevention	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P273 Avoid release to the environment.
Response	P302+P352 IF ON SKIN: Wash with plenty of water/... P333+P313 If skin irritation or rash occurs: Get medical advice/attention. P321 Specific treatment (see ... on this label). P362+P364 Take off contaminated clothing and wash it before reuse. P308+P313 IF exposed or concerned: Get medical advice/ attention. P391 Collect spillage.
Storage	P405 Store locked up.
Disposal	P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

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5. Other Information

5.0 Merck: 14,510

5.1 Chemical Properties: Ammonium chromate is a yellow crystalline compound which can be used in solution, which is yellow with an ammonia odor.

5.2 Uses: Sensitizing gelatin in photography, in textile printing pastes, in fixing chromate dyes on wool, and as a reagent in analytical chemistry.

5.3 Uses: Ammonium chromate, is used in photography as a sensitizer for gelatin coatings. It's often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, catalyst.

5.4 Uses: Reagent for the preparation of a solid heterogeneous oxidizing agent for liquid phase oxidation of alcohols.

5.5 Hazard: Toxic by inhalation, strong irritant. Con- firmed carcinogen.

5.6 Safety Profile: A poison. Mutation data reported. See also CHROMIUM COMPOUNDS. A powerful oxidizer. An explosion hazard when shocked or heated. When heated to decomposition it emits toxic fumes of NH3, Cr03, and NOx. Incompatible with reducing agents.

5.7 Potential Exposure: It is used to inhibit corrosion and in dyeing, photography and many chemical reactions. Used as a fungicide and fire retardant.

5.8 Shipping: UN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

5.9 Purification Methods: Crystallise it from weak aqueous ammonia (ca 2.5mL/g) by cooling from room temperature. It loses NH3 on heating to form ammonium dichromate. POISONOUS.

5.10 Incompatibilities: A strong oxidizer and an explosive. Contact with combustible, organic and other readily oxidizable substances may cause fire and explosions. Hydrazine, other reducing agents. Corrosive to metals.

5.11 Waste Disposal: Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Addition of a large volume of a reducing agent solution (hypo, bisulfite or ferrous salt, and acidify with 3 M sulfuric acid). When reduction is complete, flush to drain with large volumes of water.

6. Computational chemical data

Molecular Weight: 152.07g/mol
Molecular Formula: CrH₈N₂O₄
Compound Is Canonicalized: True
XLogP3-AA:
Exact Mass: 151.988911
Monoisotopic Mass: 151.988911
Complexity: 81.3
Rotatable Bond Count: 0
Hydrogen Bond Donor Count: 4
Hydrogen Bond Acceptor Count: 6
Topological Polar Surface Area: 76.6
Heavy Atom Count: 7
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Isotope Atom Count: 0
Covalently-Bonded Unit Count: 3
CACTVS Substructure Key Fingerprint: AAADccADOAAAAACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQCAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA==

7. Question & Answer

12 5mL of 0 850M copper II nitrate reacts with 10 8mL of 2 01M ammonium chromate How do I calculate the theoretical yield? Jul 28 2023
Copper (II) nitrate and ammonium nitrate will react to produce a precipitate of copper(II) chromate. The theoretical yield of copper(II) chromate can be worked out as illustrated below. Balanced equat..

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