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Hydrochloric acid of additive agent for food
From;    Author:Stand originally
GB 1897-86 of hydrochloric acid of additive agent for food of level of state of People's Republic of China

Food Additive Hydrochloric Acid replaces GB 1897-80
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This standard applies to diaphragmatic law to electroanalysis the chlorine of salt earning and hydric, via synthesize and making gotten hydrochloric acid, in synthetic food
Machine medium applying.
Structural formula: HCl
The element is measured: 36.46(is pressed 1983 international atomic weight)

1 technology asks
1.1 exteriors: Why does  horsefly  dregs of rice Sui of standing grain of  this Tao
1.2 products should accord with a watch 1 requirement:
Express 1
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┃ index
Index name ┣ -- -- ┳ -- -- ┳ -- --
S-35 of ┃ of S-33 of ┃ of ┃ S-31
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Total acidity (with HCl % plan) ┃ of 33.0 of ┃ of ≥ ┃ 31.0 35
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Iron, 0.005 ┃ of 0.005 ┃ of % ≤ ┃ 0.005
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Sulfate (with SO4 % plan) 0.007 ┃ of ≤ ┃ 0.007 ┃ 0.007
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Free is chloric reach bromine (with Cl % plan) 0.003 ┃ of ≤ ┃ 0.003 ┃ 0.003
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Calcination is residual, ┃ of 0.05 of ┃ of 0.05 of % ≤ ┃ 0.05
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Heavy metal (with Pb % plan) 0.0005 ┃ of ≤ ┃ 0.0005 ┃ 0.0005
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Arsenic, 0.0001 ┃ of % ≤ ┃ 0.0001 ┃ 0.0001
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Law of 2 check proved recipe
Water of the distilled water that the water that differentiate and uses in testing process and reagent need to be able to satisfy an analysis to ask, ion exchange and cent
Reagent of analyse pure above.
2.1 differentiate
2.1.1 reagent and solution
2.1.1.1 nitric acid are silver-colored (GB 670-77):2% (M/V) solution.
2.1.1.2 ammonia water (GB 631-77):23 hartshorn.
2.1.1.3 methylic orange (HGB 3089-59):0.1 % (M/V) solution.
2.1.2 differentiate a method
2.1.2.1 quantities take this product 1.0ml in 50ml water, drop add nitric acid silver-colored solution (2.1.1.1) , produce white namely lacteal heavy
Form sediment. Can be in ammoniac solution (dissolve in 2.1.1.2) , not deliquescent in nitric acid.
2.1.2.2 quantities take this product 1.0ml in 100ml water, add solution of 2 methylic orange (2.1.1.3) , this aqueous solution is strong acid
Quality.
2.1.3 appraisal conclusion
Above experiments twice give out to reacting, can decide this product to be hydrochloric acid.
Of 2.2 total acidity determine
2.2.1 reagent and solution
2.2.1.1 oxyhydrogen change sodium (GB 629-81):1N standard solution, by GB 601-77 " solution of chemical reagents standard is made
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