Zein
CAS No.: 9010-66-6
Product Name: Zein
CAS# 9010-66-6
Package: 25kg/drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
CAS# 9010-66-6
Package: 25kg/drum
Delivery time: in stock for prompt shipment.
Dangerous goods or not: Not
Country of origin: China
Description
Spec of Zein :
| Items | Specification | Results |
| Characteristic | It should be yellow or yellowish powder, odorless and tasteless. Soluble in 80% to 92% ethanol or 70% to 80% acetone, insoluble in water or absolute alcohol. | Conforms |
| Identification | 1、take this product about 20 ㎎, add 90% ethanol 2 ml dissolved, add 10% lead acetate solution 2 ml, namely a white precipitate. 2、take this product about 0.1g, add 0.1mol/l sodium hydroxide solution 10ml and copper sulphate solution drops, heated in water bath, turns purple. 3、take this product about 25 mg, add 1 ml of nitric acid, vibration wave force, the solution is light yellow, plus 6 mol/l of ammonia 10 ml, solution turns orange. 4、Take 10 mg of the test, according to the request processing, according to the electrophoresis (general principles of the 0541 fifth method), in the 19 ~ 26 kda should contain two main protein band. |
2、Sampling: 0.1042 g response: into purple 3、Sampling: 26 mg response: into orange 4、Sampling: 10 mg reaction: in 19 to 26 kda has two main protein band |
| Soluble in hexane content | ≤12.5% | 8.84% |
| Loss on Drying | ≤8.0% | 2.85 % |
| Residue on Ignition | ≤0.3% | 0.28% |
| Heavy Metal | ≤20ppm | Conforms |
| Nitrogen Assay (on dried basis) | 13.1%~17% | 13.94% |
| The total number of aerobe | ≤ 100cfu/g | 20cfu/g |
| Yeast & Mold | ≤ 10cfu/g | ＜10cfu/g |
| E．Coli | Should not be detected | Negative |
| Salmonellae | No detectable per 10 grams | Negative |
| Bile salt-tolerant Gram-negative bacteria | ≤ 10cfu/g | ＜10cfu/g |
| Fineness | It should pass through a 40-mesh sieve, and there should be no residue in every 25g. | Conforms |
