Discontinued

Stanford Chemicals supplies high purity Fluorescent Zinc Sulfide:

Item No.	Grade	Purity	Lot Size	Inquiry
FZS-4N	Fluorescent Grade	4N	1 KG 10 KG 1 MT	Ask for a Quotation

 

Fluorescent Zinc Sulfide Specification:

Item	Specification
Chemical component	ZnS
Appearance	White or light yellow powder
ZnS content, %	≥99.99%
Moisture, %	≤1.0
Fe,ppm	≤0.3
Cu,ppm	≤0.1
Pb,ppm	≤0.6
Ni,ppm	≤0.1
Cd,ppm	≤0.3
Mn,ppm	≤0.1
D50 (µm)	4.0 +/- 1
Specific volume, ml/100g	130 +/- 30

 

Fluorescent Zinc Sulfide Application:

Color kinescope powders, plasma crystal powders, and other kinds of fluorescence powders used in luminescent materials, pigments, plastics, rubbers, dyestuffs, coatings, filming, counter forgery, and long persistence.

Fluorescent Zinc Sulfide Description:

With the “phosphorimeter” described in the post Glowing in the Dark, we made a series of measurements on the classic zinc sulfide phosphorus, doped with silver and also with copper. Zinc sulfide is an interesting material: ZnS is a semiconductor, ie a material with an electron-filled valence band and an empty conduction band. It is known that the energy gap between the two bands is, in pure ZnS, about 350 kJ/mol (3.6 eV). Given the large energy gap, only a very small concentration of charge carriers is present in normal temperature conditions.