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Hydrochloric acid high concentration hydrochloric acid  GB 1886.9—2016 GB 320—2006

National Food Safety Standard (GB 1886.9—2016)
Industrial used hydrochloric acid (GB 320-2006)

Chemical name hydrochloric acid
Molecular formula HCl
Molecular weight 36.45
Model and specification 31%, 32%, 35%, 36%
Physicochemical property Hydrochloric acid is colorless or light yellow clear liquid; relative density(20℃): 31% is 1.156g/cm3; 32% is 1.160g/cm3; 35% is 1.169 g/cm3; 36% is 1.172 g/cm3, non-combustible; strong irritation and corrosivity. Hydrochloric acid is a kind of strong acid.

Quality standard

National Food Safety Standard (GB 1886.9—2016)

Item

Technical index

S-31

S-32

S-35

S-36

appearance

colorless or light yellow clear liquid

total acidity(in HCl), w/%

≥ 31.0

≥ 32.0

≥ 35.0

≥ 36.0

iron (Fe), w/%

≤ 0.0005

sulfate(in SO4), w/%

≤ 0.007

free chlorine(in Cl), w/%

≤ 0.003

reducing substance (in SO3), w/%

≤ 0.007

nonvolatile matter, w/%

≤ 0.05

arsenic(As), (mg/kg)

≤ 1.0

heavy metal(in Pb), (mg/kg)

≤ 5

Industrial synthetic hydrochloric acid (GB 320—2006)

Item

Technical index

superior product

first class

qualified product

appearance

colorless or light yellow clear liquid

total acidity(in HCl), %

≥31.0

iron(Fe), %

≤0.002

≤0.008

≤0.01

sulfate(in SO4), %

≤0.005

≤0.03

--

free chlorine(in Cl), %

≤0.004

≤0.008

≤0.01

burning residue, %

≤0.05

≤0.10

≤0.15

arsenic (As), %

≤0.0001

Product usage
Food additive, hydrochloric acid, is used as processing agent in food industry;
It is used in textile industry, as decomposition accelerator of bleaching liquid;
It is used in smelting and electroplating industry as etching agent and surface cleaning agent of metals;
It is used for manufacturing of organic chloride and inorganic chloride, for synthesis of drugs, dyes, paper making and leather;
As cleaning agent of pottery articles;

Packaging, transportation and storageHydrochloric acid is packed with exclusive used tank care, plastic drum, glass fiber reinforced plastic lined container or ceramic tank; keep it away from poisonous dangerous products;


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