Determination of Residue on Evaporation in Anhydrous Ammonia 1 SCOPE AND FIELD OF APPLICATION This method is suitable for the determination of the residue left after evaporation i.e., the non-volatile material in ammonia solution. 2 PRINCIPLE A known weight of sample is evaporated to dryness in a platinum dish on a steam bath. The increase in mass of the dish is measured.

1. GBH Enterprises, Ltd.
Plant Analytical Techniques
AMMONIA SOLUTION:
Determination of Residue on
Evaporation in Anhydrous Ammonia
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2. AMMONIA SOLUTION:
Determination of Residue on
Evaporation in Anhydrous Ammonia
WARNING AND SAFETY PRECAUTIONS:
AMMONIS SOLUTION: SPLASHES INT0 EYES CAN CAUSE SEVERE
BURNS. AVOID INGESTION. PRESSURE MAY BUILD UP IN CLOSED
CONTAINERS.
1
SCOPE AND FIELD OF APPLICATION
This method is suitable for the determination of the residue left after
evaporation i.e., the non-volatile material in ammonia solution.
2
PRINCIPLE
A known weight of sample is evaporated to dryness in a platinum dish on
a steam bath. The increase in mass of the dish is measured.
3
APPARATUS
Normal laboratory apparatus and:
3.1
Platinum evaporation dish.
3.2
Muffle furnace capable of operating at 1000°C.
3.3
Steam bath.
Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown
Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass
Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance
Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts /
Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals
Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries
Web Site: www.GBHEnterprises.com

3. 4
PROCEDURE
Ignite a large platinum dish (3.1) in a Muffle furnace (3.2) at about 900°C
for a few minutes, allow to cool thoroughly in a desiccator and weigh to the
nearest 0.1 mg.
Weigh approximately 200 g sample into the platinum dish and evaporate
on a steam bath (3.3).
Remove the dish from the steam bath and dry for 30 minutes in a suitable
oven at 100 + 2°C. Cool thoroughly in a desiccator and reweigh to the
nearest 0.1 mg; reserve for the Residue on Ignition test.
5.1
Expression of Results
Let w g - increase in mass of platinum dish.
5.2
Precision
Precision was not available at the time of issue.
Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown
Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass
Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance
Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts /
Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals
Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries
Web Site: www.GBHEnterprises.com

4. Refinery Process Stream Purification Refinery Process Catalysts Troubleshooting Refinery Process Catalyst Start-Up / Shutdown
Activation Reduction In-situ Ex-situ Sulfiding Specializing in Refinery Process Catalyst Performance Evaluation Heat & Mass
Balance Analysis Catalyst Remaining Life Determination Catalyst Deactivation Assessment Catalyst Performance
Characterization Refining & Gas Processing & Petrochemical Industries Catalysts / Process Technology - Hydrogen Catalysts /
Process Technology – Ammonia Catalyst Process Technology - Methanol Catalysts / process Technology – Petrochemicals
Specializing in the Development & Commercialization of New Technology in the Refining & Petrochemical Industries
Web Site: www.GBHEnterprises.com