Specifications of Commercial Pure Ammonium Sulfate
Appearance: White powder Nitrogen N content: 21.0% min (dry basis) Moisture: 0.3% max Free acid: 0.05% max Fe: 0.007% max As: 0.00005% max Insoluble matter: 0.01% max Heavy Metals: 0.005% max
Ammonium Sulfate USP NF Grade
(NH4)2SO4 --132.14 -- [7783-20-2.
Ammonium Sulfate contains not less than 99.0 percent and not more than 100.5 percent of (NH4)2SO4. Identification: A solution (1 in 20) responds to the tests for Ammonium and for Sulfate. Microbial limits: The total aerobic microbial count does not exceed 1000 cfu per g, and the total combined molds and yeasts count does not exceed 10 cfu per g. pH: between 5.0 and 6.0, in a solution (1 in 20). Residue on ignition: Not more than 0.005%, determined on a 20-g sample. Limit of insoluble matter: 0.005%. Limit of phosphate: To pass the test. Limit of chloride: To pass the test: not more than 5 microgm of chloride per g is found. Limit of nitrate: To pass the test: not more than 0.001% is found. Limit of iron: To pass the test: not more than 5 microgm of iron per g is found.
Ammonium Sulfate ACS specifications
Ammonium Sulphate
(NH4)2SO4
Formula Wt.: 132.14
CAS Number: 7783-20-2
REQUIREMENTS
Assay of Ammonium Sulphate or Ammonium Sulfate: 99.0% (NH4)2SO4 pH of a 5% solution: 5.0-6.0 at 25C
MAXIMUM ALLOWABLE
Insoluble matter: 0.005% Residue after ignition: 0.005% Chloride (Cl): 5 ppm Nitrate (NO3): 0.001% Phosphate (PO4): 5 ppm Heavy metals (as Pb): 5 ppm Iron (Fe): 5 ppm
Ammonium Sulfate FCC as per US Food Chemical Codex
(NH4)2SO4 Formula wt 132.14
INS: 517 CAS: [7783-20-2]
DESCRIPTION
Ammonium Sulfate occurs as colorless or white crystals or granules that decompose at temperatures above 280°. One gram is soluble in about 1.5 mL of water. It is
insoluble in alcohol. The pH of a 0.1 M solution is between 4.5 and 6.0. Function: Dough conditioner; yeast nutrient.
REQUIREMENTS
Identification: A sample gives positive tests for Ammonium and for Sulfate. Assay: Not less than 99.0% and not more than 100.5% of Ammonium Sulphate or Ammonium Sulfate (NH4)2SO4. Lead: Not more than 3 mg/kg. Residue on Ignition: Not more than 0.25%. Selenium: Not more than 0.003%.
