Manganese Chloride

We offer manganese chloride tetrahydrate and anhydrous in various grades like, manganese chloride commercial pure, food chemical codex fcc grade. Acs, american chemical society reagent grade analytical reagent ar, etc.
Specifications of commercial pure manganese chloride tetrahydrate
assay: 98.0% of mncl2·4h2o on as it is basis. (without drying)
insoluble matter: not more than 0.005%.
Iron: not more than 5 mgkg.
Lead: not more than 4 mgkg.
Ph of a 5% solution: between 4.0 and 6.0.
Substances not precipitated by sulfide: not more than 0.2%, after ignition.
Sulfate: not more than 0.005%
reagent: manganese chloride tetrahydrate as per acs specifications
manganese chloride tetrahydrate acs
manganese (ii) chloride tetrahydrate
manganous chloride acs tetrahydrate
mncl2 . 4h2o
formula wt 197.90
cas number 13446-34-9
requirements
assay: 98.0-101.0% mncl2 . 4h2o
ph of a 5% solution: 3.5-6.0 at 25c
maximum allowable
insoluble matter: 0.005%
sulfate (so4): 0.005%
heavy metals (as pb): 5 ppm
iron (fe): 5 ppm
calcium (ca): 0.005%
magnesium (mg): 0.005%
potassium (k): 0.01%
sodium (na): 0.05%
zinc (zn): 0.005%
tests
assay: (by complexometric titration of mn). Weigh accurately 0.8 g, transfer to a 500-ml beaker, and dissolve in 200 ml of water. Add a few milligrams of ascorbic acid to prevent oxidation. From a burette, add about 30 ml of standard 0.1 m edta. Now add 10 ml of ph 10 ammoniacal buffer solution and about 50 mg of eriochrome black t indicator mixture. Continue the titration with edta to a clear blue color (and disappearance of the last trace of red). One milliliter of 0.1 m edta corresponds to 0.01979 g of mncl2 . 4h2o.
% mncl2 · 4h2o = (ml × m edta × 19.79) sample wt (g)
ph of a 5% solution: the ph should be 3.5-6.0 at 25c.
Insoluble matter: use 20 g dissolved in 150 ml of water
iron. Use 2.0 g.
Calcium, magnesium