Specification of Ammonium PerRhenate
The number of Rhenium producers grow like mushrooms after summer rain but we still try to keep up-to-date information.

Impurities ppm (max) MMTA Russian GOST Chinese grades Typical* quality by Western producers
KazakhstanUzbekistan RussiaChina Heraeus Super metal sro. Molymet Engelhard-CLAL Phelps-Dodge Impurities ppm (max)
BasicCatalyst MetalAP-0 AP-1 Super Standard Zhezkazgan Shymkent Navoi Almalyk Tchirchik Vladikavkaz Krasnoyarks Angarsk Kyshtym Roshal Zhuzhou Chengdu Jiangxi max. catalyst grade supper alloy   typical min.typical max. Typical
Ag 50   <1   <1 5   1   Ag
Al 500 10 5 20 0.1 1 1 5 0.4 1 2 4.5 - 5 1-8.5 2.9-4.5 2-4 1 1 10 30 <1 10   5 50 5Al
As30   <1   <5 1 <5 5   5  As
B <1     10 200 <1 1-3   B
Ba 0.11   <1 1011 20     Ba
Be 0.1 1    1 1     Be
Bi   <1 0.3 <5 1   1  Bi
C <50     30 14 30  C
Ca50050 10 10 30 0.5 5 10 10 2 <3 2 4 - 8 <60 1 - 9 2 5 5 5-10 5 <1 5   2 155 Ca
Cd 0.1 2   <1   <1 <1 110++ 102 <2 50   10   2 Cd
Cl 100       <100 50   50  Cl
Co 50 5 0.1 1   <1 <1 10 11 <2 100   10   2 Co
Cr 50 5 0.1 1   <1 <2 10 1 1<2100   5   2 Cr
Cu 500 50 5 0.5 10 0.1 1 0.5 0.5 0.2 <1 1 1 - 2 0.2 0.5-1.5 0.5 1 1 2-5 50   5   2 15 7 Cu
Fe 500 50 20 5 10 0.5 5 5 5 4 <1 20 - 24 7 - 9 1-3 3-9 2-4 5 5 5-10 50 10 5   3 50 20 Fe
Ga   <1 10 50   5  Ga
Hf   <1 10 200   5  Hf
Hg     10   10   Hg
In   <1 50   20   In
Ir 75       <5     Ir
K 500 200 20 50 100 0.5 5 45 17 4 <10 61 - 68 10 8-60 50-270++ 20-50 5 5 10-12 10   5   10 15 7 K
Mg 500 50 5 2 20 0.1 2 1 2 0.7 <1 1 - 2 <1 0.4-0.7 0.5 2 2 5 100 <1 10   2 7 1 Mg
Mn 500 50 5 1 20 0.1 1 1 1 0.2 <1 1 0.1 0.2 0.1 1 1 3-5 20   5   2 Mn
Mo 500 100 20 5 100 0.5 5 5 5 0.2 16 5 - 8 1.5 - 30 <2 5-10 3 5 5 9-10 50 <3 10   10 150 35 Mo
Na 500 50 5 10 20 0.5 5 5 10 4 <2 5 10 1-6 5 1 5 5 10-20 10 <3 3-4   2 20 1 Na
Nb   <1 10 200   2   Nb
Ni 500 50 5 2 20 0.1 1 2 2 0.4 <1 2 1 - 3 0.2 0.2-0.5 0.5 1 1 2-5 20 <1 5   2 15 7 Ni
P 500 20 20 10 10 10 0.83 <1 10 5-10 3-4 2 <10 30 <3 10   P
Pb 30 0.1 1   <5   <1 <2 250++ 10 1 1 5-6 2   2   2 7 5 Pb
Pd 50     <2     Pd
Pt 0.1 1     39-70 1 1     Pt
Rh 50     <2     Rh
Ru 50     <2     Ru
S 500 20 50 20 20 18 13 5 20 10-38 5 0.1 <10 15 <10 15   S
Sb 30 0.1 2   <1 <2 3 2 2 <5 5   5   Sb
Se   <5 2 5 <2 5   Se
Si 500 50 30 10 20 1 10 10 <2 10 4.5 - 9 6-12 1 2 10 10 20 <5 10   10 10 10 Si
Sn 50 0.1 1   <1 <2 2 1 1 <5 10   10   3 1 Sn
Sr     10     Sr
Ta   <10 10 200 <10 20   Ta
Te   <1 1 <0.5 1   Te
Th   <1 10   10   Th
Ti 0.1 1   <1 10 1 1 50 3 5   Ti
Tl   <1 1 <1 1   Tl
V   <1 10 200   5   V
W 5 0.5 5   <1 <5 5 5 <10 50 <8 10   10 W
Zn 50 5 0.1 2 2 - 5   <1 2 10 210++ 3 2 2 0.5 50 <1 10   2 Zn
Zr   <1 10 <2 30 <1 5   Zr
H2O 0.10% 0.10% 0.10% 0.03% 0.01-0.02% 0.011% 0.042% 0.02% 0.17% 0.7-0.8% <0.01%     120 H2O
Re min.
(NH4ReO4)
69.0% 68.5-
69.8%
69.0% 69.0% 68.5-
69.0%
99.999%
69.41%
99.99% 69.1-
69.2%
69.0-
69.25%
69.14% 69.3% 69.15-
69.25%
69.0-
69.1%
69.40-69.41% 67.9-
69.3%
69.0-
69.2%
69.4% 69.3-69.4% 69.2-
69.4%
  69.4%   69.4% 99.95% 69.39% Re min.
(NH4ReO4)
*Typical quality according to producer or neutral assayer quality certificates.
++On specific lots we measured extreme high values for this impurities, however most of the cases these values are in the range of specification AR-0

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