With the increasingly high integration and miniaturization of semiconductor devices, there has been a growing demand for even higher quality and higher purity aqueous ammonium, which is used to clean silicon wafers. UBE's high-purity aqueous ammonium is a high-grade product with virtually no metal ion particles thanks to our integrated manufacturing under stringent quality control that covers everything from raw material refining to manufacturing and packaging.
Chemical properties |
- A transparent, colorless solution that exhibits a reaction to strong alkalis.
- Has a distinct, powerful, irritating odor due to the volatilization of ammonia gas, even at room temperature, and when heated, ammonia gas volatilization increases violently.
- Etches copper, nickel, zinc, tin and their alloys.
- Reacts violently, releasing heat when exposed to acid or halogen.
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Physical properties |
Specific gravity |
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(20°C): |
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0.8980(28%) |
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0.8920(30%) |
Specific heat |
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(20°C): |
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1.0 cal/g-°C |
Viscosity |
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(20°C): |
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1.29 cp |
Vapor pressure |
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(20°C): |
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0.68 kg/cm2 |
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(30°C): |
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1.03 kg/cm2 |
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- High purity, high quality
- Low metal ion content
- Low particle content
Special polyethylene vessels
- Drums:170kg(200l), 90kg(100l)
- Cans:18kg(20l)
- Containers:900kg(1m3)
Effect on human body |
- Ammonia gas has a detectable odor between 5 and 10ppm.
- Inhaling high concentrations of ammonia gas causes coughing, respiratory distress, vomiting, fluid in the lungs, bronchitis, and pneumonia.
- Contact with the eyes causes corneal clouding and tearing, and may even lead to vision impairment or loss.
- Irritates or corrodes skin and mucous membranes due to its strong alkalinity.
- May cause gastrointestinal disorders.
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Body protection |
- Wear protective goggles, a gas mask designed specifically for ammonia gas, and other protective gear such as rubber gloves.
- When opening, keep face at a safe distance and slowly remove the plug so that the ammonia gas can slowly dissipate. Once the pressure has equalized, then remove the plug completely.
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Emergency treatment |
- Rinse immediately with a large amount of running water if it comes into contact with skin.
- Rinse immediately with a large amount of running water if it gets in eyes and then seek treatment from an ophthalmologist.
- If it gets in nose or down throat, rinse nose out and gargle with 2% boric acid aqueous solution.
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Others |
- Rinse away any leakage with a large amount of running water.
- Do not allow any gas leakage near ignition sources.
- Extinguish fires with a large amount of running water.
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- Structures for storing vessels containing this chemical should have adequate natural ventilation or a ventilation system.
- Since heating causes the release of ammonia gas, avoid exposure to direct sunlight and keep containers at 40°C or less.
- Handle carefully to avoid physically damaging vessels.
- Provide a place to wash face, a safety shower, and water plumbing near the area used for storing and handling.
Poisonous and Deleterious Substances Control Law |
Deleterious substances |
Labor Safety and Sanitation Law |
Specified chemical substances |
Regulations for the Transport and Storage of Dangerous Goods in Ships |
Corrosive substances |
Acceptable Concentration |
25ppm(18mg/m3) |
Inquiry
Products Inquiry
- UBE Corporation
- Performance Polymers & Chemicals Div.
Fine Chemicals & Industrial Chemicals Business Dept.
- Phone : +81(3)5419-6176
- Fax : +81(3)5419-6256
- Products Inquiry Form