Ammonium sulfate

• CAS: 7783-20-2
• Catalog Number: ACM7783202
• Category: Metal & Ceramic Materials
• Molecular Weight: 132.14
• Molecular Formula: (NH4)2SO4;(NH4)2SO4;H8N2O4S
• Description: Ammonium sulfate is a white odorless solid. Sinks and dissolves in water. (USCG, 1999);DryPowder; DryPowder, PelletsLargeCrystals; DryPowder, PelletsLargeCrystals, Liquid; Liquid; OtherSolid; PelletsLargeCrystals; PelletsLargeCrystals, Liquid; WetSolid;White powder, shining plates or crystalline fragments
• Synonyms: Diammonium sulfate
• IUPAC Name: Diazanium;sulfate
• Canonical SMILES: [NH4+].[NH4+].[O-]S(=O)(=O)[O-]
• InChI: InChI=1S/2H3N.H₂O4S/c;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
• InChI Key: BFNBIHQBYMNNAN-UHFFFAOYSA-N
• Melting Point: >280 °C
• Flash Point: 26°C
• Density: 1.77 g/mL at 25 °C (lit.)
• Solubility: Freely soluble in water, insoluble in ethanol
• Appearance: Yellow to orange solid
• Storage: Room Temperature
• Autoignition Temperature: Not flammable (USCG, 1999)
• Color/Form: White or brown orthorhombic crystals;Orthorhombic crystals or white granules;Brownish gray to white crystals according to degree of purity
• Complexity: 62.2
• Corrosivity: Does not attack iron or aluminum /Ammoniacal solutions/
• Covalently-Bonded Unit Count: 3
• Decomposition: When heated to decomposition it emits very toxic fumes of /sulfur oxides, nitrogen oxides and ammonia/.;On heating in an open system, the compound begins to decompose at about 150 °C, yielding ammonium bisulfate (NH4HSO4), and releasing ammonia.
• EC Number: 231-984-1;231-984-1;269-077-8
• Exact Mass: 132.02047791
• Formal Charge: 0
• Hazard Statements: Xi,Xn
• H-Bond Acceptor: 4
• H-Bond Donor: 2
• Heavy Atom Count: 7
• Monoisotopic Mass: 132.02047791
• Odor: Slight odor of ammonia
• Other Experimental: Average specific heat capacity: 1.423 J/g-K at 2-55 °C; heat of solution on dissolution of 1 mol in 400 mol water: +9.92 kJ at 18 °C; integral heat of solution: +6.57 kJ/mol at 30 °C; differential heat of solution for saturated solution: +6.07 kJ/mol at 30 °C; deliquesces above 80% relative humidity;Decomposes above 280 °C
• Refractive Index: Index of refraction: 1.521, 1.523, 1.533
• Rotatable Bond Count: 0
• Safety Description: 37/39-26-36
• Stability: Stable under recommended storage conditions.
• Supplemental Hazard Statements: H412-H303
• Topological Polar Surface Area: 90.6 Ų
• UNII: SU46BAM238
• Vapor Pressure: Vapor pressure of saturated solution: 0.901 kPa at 10 °C; 1.319 kPa at 15 °C; 1.871 kPa at 20 °C; 2.573 kPa at 25 °C; 3.439 kPa at 30 °C; 4.474 kPa at 35 °C

Custom Q&A

What is the molecular formula of ammonium sulfate?

The molecular formula of ammonium sulfate is H8N2O4S.

What is the molecular weight of ammonium sulfate?

The molecular weight of ammonium sulfate is 132.14 g/mol.

How is ammonium sulfate obtained?

Ammonium sulfate is obtained by the reaction of sulfuric acid with two equivalents of ammonia.

Is ammonium sulfate soluble in water?

Yes, ammonium sulfate is very soluble in water, with a solubility of 70.6 g/100 g water at 0℃ and 103.8 g/100 g water at 100℃.

What is the role of ammonium sulfate?

Ammonium sulfate has a role as a fertilizer, especially for alkaline soils.

What are some synonyms for ammonium sulfate?

Some synonyms for ammonium sulfate include ammonium sulphate, diammonium sulfate, and Mascagnite.

What are the component compounds of ammonium sulfate?

The component compounds of ammonium sulfate are sulfuric acid (CID 1118) and ammonia (CID 222).

What is the CAS number for ammonium sulfate?

The CAS number for ammonium sulfate is 7783-20-2.

Are there any other identifiers for ammonium sulfate?

Yes, there are several other identifiers for ammonium sulfate, including EC Number 231-984-1, UNII SU46BAM238, and DSSTox Substance ID DTXSID1029704.

What is the chemical safety information for ammonium sulfate?

The chemical safety information for ammonium sulfate states that it is a white odorless solid that sinks and dissolves in water.