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Second of additive agent for food is acerbity (acetic acid)
From;    Author:Stand originally
Second of additive agent for food of level of state of People's Republic of China is acerbity (acetic acid) GB 1903-80
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This standard is applied to by alcohol (zymotechnics) the second that makes for raw material is acerbity. Acidity lotion is made in food treatment.
Structural formula: CH3COOH
The element is measured: 60.05(is pressed 1977 international atomic weight)
One, technical requirement
1. exterior: Why Sui of standing grain of  this Tao
2. second acid should accord with following requirement:
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Index of index name ┃
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Second acid content, ┃ of % ≥ 99
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Potassium permanganate experiments, minute ┃ of ≥ of       5
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Formic acid, ┃ of ≤ of   of   of   of   of   of   of %     0.15
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Aldehyde, ┃ of ≤ of   of   of   of   of   of   of %     0.05
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Evaporate residual, ┃ of ≤ of   of   of   of   of %     0.02
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Formaldehyde, ┃ of ≤ of   of   of   of   of   of   of %     0.003
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Different smelly ┃ accords with a regulation
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Iron (Fe) , ┃ of ≤ of   of   of   of   of   of %     0.0002
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Heavy metal (with Pb plan) , ┃ of ≤ of   of %     0.0002
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Arsenic (As) , ┃ of ≤ of   of   of   of %   0.0001
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2, check and accept regulation
3. second acid should examine by the technology of the manufacturer the branch undertakes examining. The manufacturer should make sure all products that leave factory all are accorded with
The requirement of this standard, every approve the product that leave factory to answer with quality certificate.
4. user can check and accept the product quality that regulation and experiment method get to place to undertake examining according to what this standard sets.
5. second acid should be a batch with not be more than 5 tons, every batches from gross each take out the sample that waits for a quantity inside the bucket of 5% , batches small when, also not
Can little at 5 pails.
When taking sample, be in charge of with one cleanness, dry glass slowly the bottom that inserts a bucket, if the second acid inside the bucket coagulates,be solid shape
Voice, what must make is fused and complete, next sampling.
What take sample total volume not less than 1 rise. After mixing, install Yu Qingjie, dry grinding in oral agent bottle, stickup label,
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