| ≥1 piece |
Synonyms: citric acid hydrate, citric acid, 2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate Beta-Hydroxytricarboxylic Acid.
CAS Number: 77-92-9 for anhydrous and 5949-29-1 for monohydrate
EC# (EINECS): 201-069-1
FEMA Number: 2306
Molecular Weight: 192.13
Molecular Formula: C6 H8 O7 or C6H8O7.H2O
Category: acidulants, sequestrants, antioxidant synergists, flavoring agents
E-Number: E330
Specifications and Typical Certificate of Analysis for citric acid anhydrous
|
No. |
Item |
Unit |
Specification |
Analysis Result |
|
1 |
Appearance |
? |
Colorless or white crystal |
Pass the test |
|
2 |
Identification and solubility |
? |
Pass the test |
Pass the test |
|
3 |
Clarity and color of solution |
? |
20% Water solution clarity |
Clarity |
|
4 |
Assay |
% |
99.5-101.0 |
99.89 |
|
5 |
Humidity |
% |
≤0.5 |
0.14 |
|
6 |
Sulfated Ash |
% |
≤0.1 |
0.035 |
|
7 |
Sulfate |
ppm |
≤150 |
<30 |
|
8 |
Oxalates |
ppm |
≤350 |
<20 |
|
9 |
Calcium |
ppm |
≤200 |
<10 |
|
10 |
Heavy metal |
ppm |
≤10 |
<1 |
|
11 |
Iron |
ppm |
≤50 |
<1 |
|
12 |
Chloride |
ppm |
≤50 |
<5 |
|
13 |
Readily carbureted substance |
? |
Standard color |
Less than standard |
|
14 |
Barium |
? |
Pass the test |
Pass the test |
|
15 |
Bacterial endotoxin |
IU/mg |
≤0.5 |
<0.5 |
|
16 |
Aluminium |
ppm |
≤0.2 |
<0.2 |
|
17 |
Arsenic |
ppm |
≤1 |
<0.5 |
|
18 |
Mercury |
ppm |
≤1 |
<0.1 |
|
19 |
Lead |
ppm |
≤1 |
<0.5 |
|
20 |
Organic volatile impurity |
? |
Pass the test |
Pass the test |
|
21 |
Tridodecylamine |
ppm |
≤0.1 |
<0.1 |
|
22 |
U.V. Radiation absorption value |
? |
Pass the test |
Pass the test |
|
-------- Mesh size: 10-30mesh as required by the buyer. |
||||
Citric acid is a weak organic acid. It is a natural Preservative/conservative and is also used to add an acidic, or sour, taste to foods and soft drinks. Citric acid is a commodity chemical, and more than a million tones are produced every year by fermentation. It is used mainly as an acidifier, as a flavoring, and as a chelating agent.
As a food additive, citric acid is used as a flavoring and preservative in food and beverages, especially soft drinks. Within the European Union it is denoted by E number E330. Citric acid is found in a number of products like food, beverages, cleaners cosmetics etc. Citric acid may be used as the main ripening agent in the first steps of making mozzarella cheese. It is used as a successful alternative to nitric acid in passivation of stainless steel. Citric acid can be used to slow setting of Portland cement. It can delay setting time substantially. And … many more applications.