Indium Compounds
Indium Corporation manufactures a complete line of indium inorganic chemicals, each with unique physical and chemical properties. End use application range from use as a transparent conductor in flat panel computer displays to improving the operational efficiency in alkaline batteries.
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Inorganic Chemicals
- Indium Acetate
- Indium Borate
- Indium Hydroxide
- Indium Nitrate
- Indium Oxide
- Indium Sulfide
- Indium Sulfate
- Indium Trichloride
- Indium Tin Oxide
- Indium Sulfamate Plating Bath
- Indium Acetate
In(CH3COO)3 -
- Molecular weight 291.88
- White colored needle - like crystalline powder
- Strong acetic acid (vinegar) smell
- Indium Borate
InBO3 -
- Molecular weight 173.63
- Off white powder
- Insoluble in water; soluble in acids
- Indium Hydroxide
In(OH)3 -
- Molecular weight 165.84
- White, free flowing powder
- Insoluble in water; soluble in acids
- Decomposes above 150 C
- Indium Oxide
In2O3
Electronic ceramic filters -
- Molecular weight 277.64
- Light yellow powder
- Amorphous form: insoluble in water; soluble in acids
- Crystalline form: insoluble in water and acids
- Ceramic like material, similar to alumina
- Indium Nitrate
In(NO3)3 -
- Molecular weight 300.85
- Very soluble in water; soluble in alcohol
- Indium Sulfate
In2(SO4)3 -
- Molecular weight 517.81
- White / grey powder
- Soluble in water and acids
- Indium Sulfide
In2S3 -
- Molecular weight 325.82
- Insoluble in cold water; Soluble in acids; Slightly soluble in Na2S
- Indium Tin Oxide (ITO)
(In203 : SnO2) -
- Specific gravity 7.2gm / cc
- Tap density 1.20 - 1.90 g/cc
- Indium tin ratio: 1 - 20% as Sn02 depending on specification
- Indium Trichloride
InCl3 -
- Molecular weight 221.18
- White colored plate-like particles
- Very deliquescent
- Very soluble
- Sublimes at 300 deg. C
Indium Sulfamate Plating Bath
Indium Corporation manufactures Indium Sulfamate Plating Bath. Indium Sulfamate Plating Bath is a ready-to-use trouble-free formulation containing all necessary chemicals to insure quality electroplating of indium onto a variety of substrates. This bath uses economical soluble indium anodes and is the standard bath for use for indium electroplating.
The standard high throw bath supplied ready to use for general plating applications. This bath uses soluble indium anodes and has the advantages of:
- extremely stable operation and long life plating bath to maintain and operate
- constant plating rate
- operates at room temperature
- no additional agents required
- easy reclamation of waste water for indium value use by simply raising the pH of the stagnant rinse tank and allowing the precipitated indium to settle
- wide current density operation
- high cathode efficiency of 90%
Plating Rate: at 20 ASF and 90% cathode efficiency the bath will deposit .001486 inches per hour.
| Ready to Use Indium Sulfamate Bath | |
|---|---|
| Indium Sulfamate | 105.36 grams per liter |
| Sodium Sulfamate | 150 grams per liter |
| Sulfamic Acid | 26.4 grams per liter |
| Sodium Chloride | 45.84 grams per liter |
| Dextrose | 8.0 grams per liter |
| Triethanolamine | 2.29 grams per liter |
| pH* | 1-3.5 (1.5-2 preferred) |
| Temperature (Static) | Room Temperature |
| Cathode Efficiency | 90% |
| Anode Efficiency | Indium, 100% |
| Throwing Power | Excellent |
| Quality of Plate | Excellent |
| Ease of Solution Analysis | Easy |
| Critical Temperature (Working) | None, with or without agitation |
| Color of Solution | Clear (when new.) Will darken after use, due to organic material breakdown/ This has shown no effect on deposit. Filtering of bath can be done through activated charcoal to maintain clarity of bath. |
| Wettability | Fairly easy |
| Tendency to Pit | None |
| Control of Solution | Metal and pH |
| Current Density | Optimum 10-20 Amps. per sq. ft. If metal is increased, current density can be increased up to 100 Amps. per sq. ft. |
| *Th pH of this bath is controlled by the addition of Sulfamic acid. | |
