EDTA disodium salt Basic information
| Chinese name | 乙二胺四乙酸二钠 | English name | EDTA disodium salt (anhydrous) |
|---|---|---|---|
| Chinese alias | 氨羧络合剂-3;乙二胺四乙;EDTA 二钠;络合酮Ⅲ;乙二胺四乙酸二钠盐; | English alias | Ethylenediaminetetraacetic acid,disodium salt,DNAse;EDTA disodium salt;4C EDTA;Ethylenediaminetetraacetic acid disodium salt;trilonbd; 查看更多英文别名 |
| CAS | 139-33-3 | Molecular formula | C10H14N2Na2O8 |
| Molecular weight | 336.20600 | Accurate mass | 336.05500 |
| PSA | 161.34000 | LOGP | -4.74060 |
EDTA disodium salt Numbering system
| RTECS | AH4410000 |
|---|---|
| EINECS | 205-358-3 |
| PubChem | 24894368 |
| MDL | MFCD00070672 |
| BRN | 3900609 |
EDTA disodium salt Physical and Chemical Properties
Appearance and characteristics:
White crystalline solid
Density:
1.01 g/mL at 25 °C
Boiling point:
>100 °C
Melting point:
248 °C (dec.)(lit.)
Flash point:
325.2ºC
Stability:
Stable.
Storage conditions:
2-8ºC
Steam pressure:
1.15E-16mmHg at 25°C
security information
RTECS：
AH4410000
Safety instructions:
S26-S36-S37/39
Hazard category code:
R22; R36/37/38
WGK Germany：
two
Customs code:
two billion nine hundred and twenty-two million four hundred and ninety-nine thousand nine hundred and ninety
Dangerous goods signs:
Xn
Production method and purpose
Production method
1. Condense sodium chloroacetate with ethylenediamine, acidify to obtain ethylenediaminetetraacetic acid, and then neutralize with sodium hydroxide to obtain it. Dissolve the obtained crude product in 10 times the amount of water, add an equal volume of ethanol to precipitate the disodium salt, and then filter and wash.
use to
Ethylenediaminetetraacetic acid disodium salt or tetrasodium salt are excellent chelating agents and complexing agents, mainly used to soften hard water and effectively chelate and chelate various metal ions (mainly calcium, magnesium, iron, lead, copper, manganese, etc.) in hard water. Used for detergents, dyeing auxiliaries, fiber processing agents, cosmetic additives, food additives, agricultural fertilizers, and marine aquaculture. Ethylenediaminetetraacetic acid disodium is an important chelating agent used for chelating metal ions and separating metals. This product is used as a bleaching and fixing solution for color photosensitive material processing, as well as a dyeing aid, fiber processing agent, cosmetic additive, pharmaceutical, food, agricultural chemical fertilizer production, blood anticoagulant, chelating agent, detergent, stabilizer, synthetic rubber, polymerization initiator, and heavy metal quantitative analysis agent.
