disodium dihydrogen ethylenediaminetetraacetate
Ethylenediaminetetraacetic acid disodium salt
CAS: 139-33-3
Molecular Formula: C10H14N2Na2O8
disodium dihydrogen ethylenediaminetetraacetate - Names and Identifiers
| Name | Ethylenediaminetetraacetic acid disodium salt |
| Synonyms | Edta2Na Disodium EDTA WANKLYN'S EDTA EDTA two sodium SEQUESTRENE NA2 Disodium Edetate VERSENE DISODIUM Edta di sodium salt VERSENE NA, DIHYDRATE disodium ethylenediamintetraacetate Ethylenediaminetetraacetic acid disodium salt disodium dihydrogen ethylenediaminetetraacetate SODIUM (DI) ETHYLENEDIAMINE TETRAACETATE DIHYDRATE Ethylenediaminetetraacetic acid disodium salt solution disodium 2-[2-(bis(carboxymethyl)amino)ethyl-(carboxymethyl)amino]acetic acid disodium 2,2'-{ethane-1,2-diylbis[(carboxymethyl)imino]}diacetate (non-preferred name) |
| CAS | 139-33-3 |
| EINECS | 205-358-3 |
| InChI | InChI=1/C10H16N2O8.2Na/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;/q;2*+1 |
disodium dihydrogen ethylenediaminetetraacetate - Physico-chemical Properties
| Molecular Formula | C10H14N2Na2O8 |
| Molar Mass | 336.21 |
| Density | 1.01g/mLat 25°C |
| Melting Point | 248°C (dec.)(lit.) |
| Boling Point | >100°C |
| Flash Point | 325.2°C |
| Water Solubility | Miscible with water. |
| Solubility | H2O: clear, colorless |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | solution |
| Color | ≤5 (0.5M)(APHA) |
| BRN | 3822669 |
| Storage Condition | 2-8°C |
| Stability | Hygroscopic |
disodium dihydrogen ethylenediaminetetraacetate - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R36/37/38 - Irritating to eyes, respiratory system and skin. R22 - Harmful if swallowed R34 - Causes burns R21/22 - Harmful in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S37/39 - Wear suitable gloves and eye/face protection S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 2 |
| RTECS | AH4410000 |
| TSCA | Yes |
| HS Code | 29224999 |
disodium dihydrogen ethylenediaminetetraacetate - Standard
Authoritative Data Verified Data
This product is ethylene diamine tetraacetic acid disodium salt dihydrate. Including C10H 14 N2Na2O8 . 2H2() should be 99. 0%~ 101. 0% ,
Last Update：2024-01-02 23:10:35
disodium dihydrogen ethylenediaminetetraacetate - Trait
Authoritative Data Verified Data
- This product is white or off-white crystalline powder; Odorless.
- This product is dissolved in water, almost insoluble in methanol, ethanol or chloroform.
Last Update：2022-01-01 11:23:24
disodium dihydrogen ethylenediaminetetraacetate - Differential diagnosis
Authoritative Data Verified Data
- Take 2g of this product, add 25ml of water to dissolve, add 3. 3% lead nitrate solution 6 m l, shake, add potassium iodide solution 3ml, no yellow precipitate formation; Add ammonium oxalate solution 3ml, no precipitate formation.
- take this product and dry it under reduced pressure at 50°C for 4 hours, and its infrared absorption spectrum should be consistent with that of the control (Spectrum set 978) (General 0402).
- identification reaction of sodium salt of this product (General rule 0301).
Last Update：2022-01-01 11:23:25
disodium dihydrogen ethylenediaminetetraacetate - Exam
Authoritative Data Verified Data
collaterals force test
take this product, precision weighing, add water to dissolve and dilute to make O .O lm o l/L solution, as the test solution; Precision weighing calcium carbonate dried at 200°C for 2 hours 0. 10g, put 100ml measuring flask, Add 10ml of water and 6m o l/L hydrochloric acid solution 0 .4M l to dissolve, adjust to Neutral with ammonia test solution, dilute to scale with water, shake, as test solution (1)(O .O lm o l/L ) ; Precision weighing copper sulfate (CuS()4 • 5H2())0. 250g, put in a 100ml measuring flask, add water to dissolve and dilute to the scale, shake, as a test solution (2 )(0 .0 d /L 1m). Precision f l take 5ml of test solution, add 3 drops of ammonia test solution and 4% ammonium oxalate solution 2 .5 m l, add test solution (1) under continuous shaking 5. 0 m l, the solution should be clear, after shaking for 1 min, if still turbid, add sample
Solution 0 .2 m l, shake for 1 min, the solution should be clear; Take 5 m l of test solution, add 10% ml of ammonia test solution and 0.5ml of potassium ferrocyanide solution, add test solution under constant shaking (2)4. 8 m l, the solution should be light blue, not red.
acidity
take 0. 50g of this product, Add 10ml of water to dissolve, and then determine according to law (General rule 0631), the pH value should be 4.0~5. 0.
clarity and color of solution
take 0901G of this product, add 0902 of water to dissolve, check according to law (general rule and general rule), the solution should be clear and colorless.
chloride
take this product l.O g, add water 2 5m l to dissolve, add dilute nitric acid 1 0 m l, shake, place for 10 minutes, after the precipitation is complete, filter, wash the filter with a small amount of water, combine washing liquid and filtrate, check according to law (General rule 0801), and standard gasification sodium solution 4. Compared with the control solution made of 0 M I, it should not be more concentrated (0. 004%).
Iron Salt
take this product 0. 5 0G, add appropriate amount of water to dissolve, put 50M l Nessler colorimetric tube, add 20% citric acid solution 2M l and calcium chloride 0. 5G, after dissolving by shaking, add 0.1m l of thioglycolic acid, shake well, adjust with ammonia test solution until litmus test paper is alkaline, dilute to 50m l with water, shake well, and stand for 5 minutes, inspection according to law (General rule 0807) and standard iron solution 1 .0M l compared with the control solution prepared by the same method, not deeper (0.002%).
Heavy metals
take this product l .O g, add 1.0 sulfuric acid, heat and carbonize completely, then burn to complete ash at 500~600°C, and check according to law (General Principles 0821 second law), heavy metals should not be more than 10 parts per million.
Last Update：2022-01-01 11:23:26
disodium dihydrogen ethylenediaminetetraacetate - Content determination
Authoritative Data Verified Data
take this product about 0.4g, precision weighing, add water 40ml to dissolve, add ammonia-gasification ammonium buffer (pHl O.O)lOml, with zinc titration solution (0.05mol/L) A small amount of Chrome Black T indicator was added near the end point, and the titration was continued until the solution changed from blue to purple. Each l of zinc titrant (0.05 mol/L) corresponds to 18.61 mg of CltlH14N2Na20 8. 2H2O.
Last Update：2022-01-01 11:23:27
disodium dihydrogen ethylenediaminetetraacetate - Category
Authoritative Data Verified Data
pharmaceutical excipients, chelating agents.
Last Update：2022-01-01 11:23:27
disodium dihydrogen ethylenediaminetetraacetate - Storage
Authoritative Data Verified Data
sealed and stored in a dry place.
Last Update：2022-01-01 11:23:27
disodium dihydrogen ethylenediaminetetraacetate - Reference Information
| LogP | -4.3 at 25℃ |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| properties | 1. EDTA has a wide range of coordination properties, the ability to form stable chelates with almost all metal ions has the advantage of providing a wide range of possibilities for the determination of elements (better than acid-base, precipitation). Disadvantages: easy interference between various components-selectivity 2, EDTA and the formation of M- EDTA coordination ratio of the vast majority of 1:13, the chelate most charged, so soluble in water, rapid reaction. |
| Use | ethylene diamine tetraacetic acid disodium is used as a color photosensitive material rinse processing bleaching and fixing liquid, also used as water purification agent, pH regulator, chelating agent, sequestrants and anticoagulants. Also used in textile printing and dyeing, detergent, metal coating and metallurgical industry. |
| production method | 1. Sodium chloroacetate is condensed with ethylenediamine, and then ethylenediaminetetraacetic acid is obtained by acidification and neutralization with sodium hydroxide. The obtained crude product was dissolved in 10-fold water, and an equal volume of ethanol was added to precipitate the disodium salt, followed by filtration and washing. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:04
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