Blood Tube Additivies-Sodium Citrate Dihydrate for ESR PT Testing Blood Collection Tubes 3.2% 3.8%
product name sodium citrate dihydrate (C6 H5Na3O7·2H2O)
Molecular weight 294.10
Properties Colorless crystals or white crystals. It is tasteless and easy to weather in the air. Soluble in water, insoluble in ethanol.
Executive standard GB/T16493-1996 (national standard)
Use Coagulation test; erythrocyte sedimentation rate test. (one-time use of vacuum blood collection tube additives)
Usage and Dosage
1. For the blood coagulation test, the concentration of the anticoagulant is 105-109 mmol / L, that is (3.13-3.2%, commonly referred to as 3.2%) of the dihydrate form of sodium citrate; 3.8% dihydrate can also be used The form of sodium citrate, with a blood sample ratio of 1:9 [additive code NC9]
2. For erythrocyte sedimentation rate test, the concentration of anticoagulant is 105-109mmol / L, that is (3.13-3.2%, commonly referred to as 3.2%) of sodium dihydrate in the form of dihydrate; can also use 3.8% two Sodium citrate in the form of hydrate, with a blood sample ratio of 1:4 [additive code NC4]
Storage Sealed and moisture-proof.
Validity Period three years
The characteristics and uses of sodium citrate
In daily life, sodium citrate appears in the raw materials of various items around us. How many people have known about it, do you know some of its functions, characteristics, and uses? Let's take a look at some of its secrets.
Sodium citrate is currently the most important citrate. It is mainly produced by fermenting starch-based substances to produce citric acid, and then neutralizing it with alkaline substances. It has the following excellent properties:
(1) Safe and non-toxic performance. Since the raw materials for the preparation of sodium citrate basically come from grain, it is absolutely safe and reliable, and will not cause harm to human health. The United Nations Food and Agriculture and the World Health Organization do not impose any restrictions on their daily intake, and the product can be considered drug-free.
(2) It is biodegradable. After sodium citrate is diluted with a large amount of water in nature, part of it becomes citric acid, and the two coexist in the same system. Citric acid is easily biodegraded in water by the action of oxygen, heat, light, bacteria and microorganisms. The decomposition method is generally through aconitic acid, itaconic acid, and citraconic anhydride to convert to carbon dioxide and water.
(3) It has the ability to complex metal ions. Sodium citrate has good complexing ability to Ca2+, Mg2+ and other metal ions, and it also has good complexing ability to other metal ions, such as Fe2+ ions.
(4) Excellent solubility, and the solubility increases with the increase of water temperature.