AMMONIUM SULFATE CAS NÂ°: 7783-20-2

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OECD SIDS AMMONIUM SULFATE 2. PHYSICO-CHEMICAL DATA ID: 7783-20-2 DATE: 18.04.2006 2.12 Dissociation Constant 2.13 Viscosity 2.14 Additional Remarks Remark: Thermal decomposition products: ammonia. Formation of ammonia in contact with alkaline solutions. Dangerous reactions with: nitrites. Reliability: (4) not assignable manufacturer/producer data without proof 26-MAY-2000 (25) 64 UNEP PUBLICATIONS
OECD SIDS AMMONIUM SULFATE 3. ENVIRONMENTAL FATE AND PATHWAYS ID: 7783-20-2 DATE: 18.04.2006 3.1.1 Photodegradation Remark: Ammonium sulfate is not photodegraded. It can be formed in atmospheric aerosols from the interaction of atmospheric ammonia with atmospheric SO2. 22-MAY-2003 (26) (17) 3.1.2 Stability in Water Type: abiotic Remark: In aqueous solution, ammonium sulfate is completely dissociated into the ammonium ion (NH4+) and the sulfate anion (SO42-). Depending on pH, ammonia (NH3) exists in equilibrium with the ammonium ion (NH4+), according to the following relationship: NH4+ + H2O NH3 + H3O+ In general, as pH increases, the fraction of the total ammonia which is un-ionized increases. For example, at 5 °C and pH 6.5, 0.0395% of the total ammonia is present as NH3. Increasing the pH from 6.5 to 8.5 will increase the un-ionized ammonium by a factor of approximately 100 (Rice and Bailey 1980). Increasing the temperature will also increase the percentage of unionized ammonium. For example, in seawater at 25 °C and pH of approximately 8.1, approximately 7% of the total ammonia is present as NH3. Reliability: (2) valid with restrictions Flag: Critical study for SIDS endpoint 12-JUL-2004 (27) (28) 3.1.3 Stability in Soil 3.2.1 Monitoring Data (Environment) Type of measurement: background concentration Medium: air Method: Result: Fine (
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OECD SIDS AMMONIUM SULFATE FOREWORD
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OECD SIDS AMMONIUM SULFATE 10. Comm
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OECD SIDS AMMONIUM SULFATE Similarl
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OECD SIDS AMMONIUM SULFATE Consumer
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OECD SIDS AMMONIUM SULFATE 1.3 Phys
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OECD SIDS AMMONIUM SULFATE - in the
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OECD SIDS AMMONIUM SULFATE 6. REFER
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AMMONIUM SULFATE CAS NÂ°: 7783-20-2

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