EDTA disodium salt Basic information

EDTA disodium salt Numbering system

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.