Author Topic: Does anyone know the halide salt chemistry for colored metal halide lamps?  (Read 127 times)
WorldwideHIDCollectorUSA
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Does anyone know the halide salt chemistry for colored metal halide lamps? « on: October 17, 2020, 05:20:27 PM » Author: WorldwideHIDCollectorUSA
In case anyone was curious, what halide salts are used to give colored metal halide lamps their distinctive colors?
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dor123
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Re: Does anyone know the halide salt chemistry for colored metal halide lamps? « Reply #1 on: October 17, 2020, 07:50:41 PM » Author: dor123
Green: Thallium, Blue: Indium, Pink: Indium, sodium and lithium.
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Re: Does anyone know the halide salt chemistry for colored metal halide lamps? « Reply #2 on: October 17, 2020, 11:00:46 PM » Author: tolivac
For most lamp makers except Eye-the lamp makers get their halide salt mixes from Anderson Physics labs.Also HPS lamp amalgams.Dr Anderson is the Physicist that came up with the formulas for the halide salts and HPS lamp amalgams.
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Re: Does anyone know the halide salt chemistry for colored metal halide lamps? « Reply #3 on: October 18, 2020, 12:04:51 AM » Author: Medved
For most lamp makers except Eye-the lamp makers get their halide salt mixes from Anderson Physics labs.Also HPS lamp amalgams.Dr Anderson is the Physicist that came up with the formulas for the halide salts and HPS lamp amalgams.

One thing is, who is manufacturing them, the other question is, who is designing the composition.

Many these suppliers deliver the composition on a custom order, without exactly knowing why the composition is to be like that. So when some composition (or the mix itself) leaks out to some shady lamp makers who try to copy the lamp, they usually fail because many details are still hidden from them.
Of course, the get some of the info from the lamp developers when they are fine tuning the composition, but generally it is lamp makers "know how".
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Re: Does anyone know the halide salt chemistry for colored metal halide lamps? « Reply #4 on: October 18, 2020, 05:35:07 AM » Author: James
APL did not develop the chemical fills for the different lamps, they instead developed a very elegant method for the manufacturing of extreme high purity anhydrous salts in the form of precisely dimensioned spheres.  These make lamp production considerably easier, therefore most lampmakers eventually switched to buying their halide pills from APL.

Within APL they have impressive levels of confidentiality.  Different R&D teams are assigned to each customer with a proper firewall to prevent that proprietary chemistries could be leaked from one customer to another.

In addition to above mixes, a beautiful rich yellow can be created by mixing sodium with thallium, but only BLV produces that. Different shades of blue are often made by using gadolinium iodides.
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Re: Does anyone know the halide salt chemistry for colored metal halide lamps? « Reply #5 on: October 18, 2020, 06:11:00 AM » Author: dor123
In addition to above mixes, a beautiful rich yellow can be created by mixing sodium with thallium, but only BLV produces that. Different shades of blue are often made by using gadolinium iodides.
I'm wondering if my Aqua Light 70W/10000 MH lamp I've bought at Aliexpress, contains dysprosium-gadolinium or gadolinium alone, as it produces 10000K blue white light , despite having rare-earths instead of broad self-reversed indium: https://www.lighting-gallery.net/gallery/displayimage.php?pos=-187378
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I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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