MinorMetals.com - Ammonium Paratungstate (APT) Commercial Grade
All Data Sourced from the MMTA - http://www.mmta.co.uk
   
1. Origin In Seller's Option
2. Tariff No. 2841 8010
3. Quality WO3 (Tungsten Trioxide)
Al
As
Bi
Ca
Cd
Co
Cr
Cu
Fe
K
Mn
Mg
Mo
Na
Ni
P
Pb
S
Sb
Si
Sn
Ti
V
88.5
10
5
5
10
5
5
5
5
10
10
10
10
20
10
5
10
5
10
5
10
5
5
5
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4. Form White finely divided free-flowing crystals.
5. Packaging Packed in polythene-lined iron drums, of uniform net weight per lot, each 100 or 200 KG net.
6. Lot Size & Tolerance Minimum 1 Full Container Load = 18 MT (+/- 2 %)
7. Documentation Standard documentation, as per MMTA Consolidated Regulations, plus detailed packing list and producer’s original, or photocopy of, producer’s quality certificate.
8. Weighing & Sampling As per MMTA Consolidated Regulations.
9. Other Notes APT is priced in $/MTU (metric ton unit), or less often in $/STU (short ton unit). 1 MTU of APT contains 10 kgs of WO3.
Using atomic weights: W = 184, O3 = 48, WO3 = 232, W portion = 184/232 = 79.31%.
79.31% of 10 kgs = 7.931 kgs W.

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