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Ammonium sulfate

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Ammonium sulfate

EINECS 231-984-1
CAS No. 7783-20-2 Density 1.769 g/cm3 (20 °C)
Solubility water: 70.6 g/100 mL (0 °C), 74.4 g/100 mL (20 °C), 103.8 g/100 mL (100 °C). Melting Point 235-280 °C, 508-553 K, 455-536 °F (decomposes)
Formula (NH4)2SO4 Boiling Point 330 °C at 760 mmHg
Molecular Weight 132.16 Flash Point 26 °C
Transport Information UN 1170 3/PG 3 Appearance Fine white hygroscopic granules or crystals
Safety 37/39-26-36 Risk Codes 10-36/37/38-22
Molecular Structure Molecular Structure of 7783-20-2 (Ammonium sulfate) Hazard Symbols IrritantXi,HarmfulXn
Synonyms

Ammonium sulfate ((NH4)2SO4);Sulfuricacid ammonium salt (1:2);Sulfuricacid diammonium salt (8CI,9CI);Actimaster AMS;Ammoniumsulfate ((NH4)2SO4);Coaltrol LPA 40;Diammonium sulfate;Diammonium sulphate;Dolamin;Liase;Nonnen R 999-10;Para-Go;Sulfuric acid,diammonium salt;Tasker Clear;Ammonium Sulphate;

 

Ammonium sulfate Consensus Reports

Community Right-To-Know List. Reported in EPA TSCA Inventory.

Ammonium sulfate Specification

Ammonium sulfate is an inorganic compound with the formula (NH4)2SO4. The substance is white odorless solid which is soluble in water but insoluble in acetone, alcohol and ether. In addition, it is incompatible with strong bases. What's more, it will sink and dissolve in water with evolution of some heat. Whan contact with strong oxidizers, it may cause fire or explosion. With the CAS registry number 7783-20-2, its systematic name is called sulfuric acid diammoniate. It will melt at 235-280 °C.

Physical properties about Ammonium sulfate are: (1)ACD/LogP: -1.031; (2)ACD/LogD (pH 5.5): -5.53; (3)ACD/LogD (pH 7.4): -5.53; (4)ACD/BCF (pH 5.5): 1.00; (5)ACD/BCF (pH 7.4): 1.00; (6)#H bond acceptors: 4; (7)#H bond donors: 2; (8)Enthalpy of Vaporization: 62.94 kJ/mol; (9)Boiling Point: 330 °C at 760 mmHg; (10)Vapour Pressure: 3.35E-05 mmHg at 25°C

Preparation of Ammonium sulfate: 
Ammonium sulfate can be prepared by ammonium hydroxide and sulphuric acid. This is a kind of neutralization reaction. After crystallization, centrifugal separation and dry, you will gain it. Ammonium sulfate can be made by reacting synthetic ammonia with sulfuric acid which is a kind of acid-base reaction:
2 NH3 + H2SO4 → (NH4)2SO4
Ammonium sulfate is also manufactured from gypsum (CaSO4·2H2O). Finally divided gypsum is added to an ammonium carbonate solution. Calcium carbonate precipitates out, leaving ammonium sulfate in the solution.
(NH4)2CO3 + CaSO4 → (NH4)2SO4 + CaCO3

Uses of Ammonium sulfate: It contains 21% nitrogen as ammonium cations, and 24% sulfur as sulfate anions. In fertilizer the purpose of the sulfate is to reduce the soil pH. It is used largely as an artificial fertilizer for alkaline soils. It is also used as an agricultural spray adjuvant for water soluble insecticides, herbicides, and fungicides. It is also used in the preparation of other ammonium salts. It has also been used in flame retardant compositions acting much like Diammonium phosphate.

When you are using Ammonium sulfate, please be cautious about it as the following:
(1)Wear suitable gloves and eye/face protection;
(2)In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;
(3)Wear suitable protective clothing;

You can still convert the following datas into molecular structure:
(1)SMILES: O=S(=O)(O)O.N.N
(2)InChI: InChI=1/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
(3)InChIKey: BFNBIHQBYMNNAN-UHFFFAOYAI

The toxicity data of Ammonium sulfate is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
domestic animals - goat/sheep LDLo oral 3500mg/kg (3500mg/kg) SENSE ORGANS AND SPECIAL SENSES: MYDRIASIS (PUPILLARY DILATION): EYE

BEHAVIORAL: TREMOR

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION
American Journal of Veterinary Research. Vol. 32, Pg. 1229, 1971.
man TDLo oral 1500mg/kg (1500mg/kg) GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA"

GASTROINTESTINAL: NAUSEA OR VOMITING

GASTROINTESTINAL: OTHER CHANGES
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 42(2), Pg. 100, 1977.
mouse LD50 intraperitoneal 610mg/kg (610mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
University of California, Berkeley, Publications in Pharmacology. Vol. 2, Pg. 1, 1941.
mouse LD50 oral 640mg/kg (640mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 53(2), Pg. 93, 1988.
rat LD50 oral 2840mg/kg (2840mg/kg) BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)

BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)

LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 53(2), Pg. 93, 1988.

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