CAS No.: 28302-36-5
Part: Leaf
Appearance: Dark green powder
Molecular weight: 724.16
Molecular formula: C34H29CuN4Na3O6
Specification: 15%-98%
Test method: HPLC
Sodium copper chlorophyllin, alias green is dark green. My humble talent powder, with a metallic luster, odorless or slightly special smell of ammonia, moisture, light and thermal stable. Soluble in water, slightly soluble in ethanol and chloroform, slightly soluble in ether and petroleum ether. Aqueous solution is blue green clear clear liquid. Calcium ions precipitate when it exists. It is one of the nine natural pigments stipulated in our country. It is the only green pigment that can be used in food industry of our country. Widely used in cosmetics, food and pharmaceutical colorant.
Sodium zinc chlorophyllin is a dark green fine crystalline substance with metallic luster, it is sodium zinc chlorophyllin (R a = CH3) and B sodium zinc chlorophyllin (R = CHO) mixture of sodium zinc chlorophyllin has good water solubility, water solution bright green in alkaline conditions, in the strong acid A (PH < 4 = solution is green, but slightly turbid. The solution is slightly soluble in ethanol, methanol, chloroform, insoluble in petroleum ether, acetone, hexane. The stability of light and heat resistance of chlorophyll zinc sodium is better than that of chlorophyll, but the light resistance of sodium zinc chlorophyllin is poor, and further research on its light fastness is needed. Sodium zinc chlorophyllin has good oxidation resistance and anti reducibility. Sucrose, glucose, salt, Vc, citric acid, several common food additives have little effect on sodium zinc chlorophyllin.
| ITEM | SPECIFICATION | RESULT |
| Assay | ≥100 | 101% |
| Physical and chemical control | ||
| Appearance | Dark green fine powder | Conforms |
| Absorptance | ≥568 | 573.4 |
| Ratio(A405/A630） | 3.0-3.9 | 3.47 |
| PH | 9.5-10.7(in a solution 1 in 100) | 10.55 |
| Loss on drying | Not more than 5%(at 105℃ for 2hours | 3.50% |
| Content of total copper | ≥ 4.25% | 4.96% |
| Content of chelated copper | ≥4.0% | 4.94% |
| Content of sodium | 5%-7% on dried bases | 6.00% |
| Nitrogen determination | ≥4.0% | 4.80% |
| Limit of ionic copper | ≤0.25% | 0.02% |
| Residue on ignition | ≤ 30% | 24.10% |
| Heavy metals | ||
| Arsenic | Not more than 2ppm | 0.3ppm |
| Lead | Not more than 1ppm | 0.01ppm |
| Cadmium | Not more than 1ppm | 0.01ppm |
| Mercury | Not more than 1ppm | 0.15ppm |
| Iron | Not more than 0.50% | 0.15% |
| Specific Tests | ||
| Total plate count | NMT 1000 cfu/g | Conforms |
| Yeast | NMT 100 cfu/g | Conforms |
| Mould | NMT 100 cfu/g | Conforms |
| Salmonella | Negative | Conforms |
| E.Coli. | Negative | Conforms |
| Test for fluorescence | No fluorescence is visible | Conforms |
| Reference Standard | USP42 | Conforms |
Sodium Copper Chlorophyllin PApplication
Copper chlorophyll sodium salt as a kind of metal porphyrin has high stability, metal porphyrin is widely used as food additives, cosmetic additives, colorants, drugs, photoelectric conversion materials and other fields.
Sodium copper chlorophyll is a food-grade green color pigment, is a natural chlorophyll derivative, can extract the chlorophyll through saponification, copper reaction, and refined, is a kind of metal porphyrin with high stability, dark green powder, slightly metallic luster.
Sodium copper chlorophyll salt is dark green powder, odorless or slightly smelly. The aqueous solution is transparent green, deepening with the increase of concentration, light resistance, heat resistance, good stability. Due to its stability and low toxicity, sodium copper chlorophyll is widely used in the cosmetics industry.
Some researchers prepared SnO2 ultrafine particle film photochemical substrate model, using sodium copper chlorophyll as sensitizer and I-/ I3- as reoxidation-reduction pair, designed and made sandwich structure photochemical substrate, and studied its photoelectric conversion mechanism.
