Disodium EDTA (EDTA-2Na)

EDTA-2Na – Stable Chelating Agent

Disodium EDTA (EDTA-2Na) is a white crystalline powder, soluble in water but almost insoluble in alcohol. Its aqueous solution is weakly acidic. As a widely used chemical compound, EDTA-2Na possesses strong chelating ability, forming stable water-soluble complexes with various metal ions including calcium, magnesium, copper, iron, and lead. Its chemical structure contains multiple reactive carboxyl and amino groups, enabling it to effectively bind metal ions across a wide range of pH conditions. It is extensively used in daily chemical care, industrial water treatment, metal cleaning, and other fields.

Parametre	Şartname
İçerik %	99.50% Min.
Klorür (Cl-) %	0,01% Maks.
Sülfat (SO₄²-) %	0.05% Maks.
Ağır Metaller (Pb olarak) %	0.001% Maks.
Demir (Fe) %	0.001% Maks.
Şelasyon Değeri (mgCaCO₃/g)	267 Min.
pH (50g/L, 25℃)	4.0 – 5.0
NTA İçeriği %	0.1% Maks.
Görünüş	Beyaz kristal toz

Ürün Özellikleri (Günlük Kimyasal Sınıf)

A 50g/L EDTA-2Na solution has a pH of 4.0–5.0 (weakly acidic), making it especially suitable for neutral to weakly acidic formulations such as cosmetics, personal care products, and certain industrial cleaners.

Önerilen Dozaj Kılavuzları

Not: Gerçek dozaj, su sertliği, ağır metal konsantrasyonu ve formülasyon pH'ına göre laboratuvar testleri ile optimize edilmelidir.

Uygulama	Önerilen Dozaj	Fonksiyon
Çamaşır Sıvısı / Bulaşık Sabunu	0,5% - 2,0% toplam formülasyon	Sert su şelasyonu, geliştirilmiş deterjan
Body Wash / Shampoo	0.1% – 0.5%	Chelates metal ions, stabilizes formulation
Cosmetics (Creams/Lotions)	0.05% – 0.2%	Prevents oxidation and discoloration, extends shelf life
Kazan / Sirkülasyonlu Soğutma Suyu	5 – 50 ppm (continuous feed)	Kireç önleme, yumuşatma
Elektrokaplama Atık Suyu	1:1 - 3:1 molar oran (ağır metal konsantrasyonuna bağlı olarak)	Bakır, nikel, kurşun vb. şelasyonu
Metal Cleaning / Polishing	1% – 5% solution	Removes rust and oxide scale

Why Choose EDTA-2Na?

Performs Excellently in Neutral/Weakly Acidic Systems

Unlike EDTA-4Na, EDTA-2Na achieves optimal chelation efficiency at pH 4.0–5.0 (weakly acidic), making it ideal for cosmetics, personal care products, neutral detergents, and certain industrial formulations.

High Chelation Value – Strong Metal Ion Binding Capacity

Each gram of EDTA-2Na chelates ≥267 mg CaCO₃ equivalent of hardness ions, which is higher than EDTA-4Na (220 mg). It effectively binds calcium, magnesium, iron, copper, and other metal ions.

Stabilizes Formulations & Extends Shelf Life

In liquid detergents, creams, lotions, and other products, EDTA-2Na chelates trace metal ions (such as Fe³⁺, Cu²⁺), effectively preventing catalytic oxidation, discoloration, odor development, and significantly extending product shelf life.

Sabun Köpüğü ve Ekipman Kireçlenmesini Önler

In hard water conditions, EDTA-2Na preferentially binds with calcium and magnesium ions, preventing anionic surfactants from forming insoluble soap scum while protecting pipes, boilers, and heat exchangers from scale buildup.

EDTA-2Na vs. EDTA-4Na: Key Differences

Karşılaştırma	EDTA-2Na (Disodyum)	EDTA-4Na (Tetrasodyum)
pH (1% çözeltisi)	Weakly acidic / Near neutral (4.0–5.0)	Kuvvetli alkalin (10,5-11,5)
Suda Çözünürlük	İyi	Extremely high, faster dissolution
Optimal Şelasyon Etkinliği	Nötr / zayıf asidik ortamlar	Alkali ortamlar
Uygun Uygulamalar	Cosmetics, personal care, food, pharmaceuticals, neutral detergents	Alkaline detergents, industrial alkaline cleaners, high hardness water, heavy metal wastewater
Şelasyon Değeri (mgCaCO₃/g)	267 Min.	220 Dak.
Şelasyon Özellikleri	Mild and stable, suitable for standard neutral/weakly acidic systems	Güçlü, Ca/Mg ve çoklu ağır metalleri hızla şelatlar

If your main product system is cosmetics, personal care products, neutral detergents, food additives, or pharmaceutical excipients, EDTA-2Na is the better choice.
For strongly alkaline formulations (e.g., laundry liquids, dishwashing detergents, alkaline industrial cleaners), EDTA-4Na is recommended.

Ana Uygulama Alanları

EDTA-2Na is widely used as a stable chelating agent and water softener across daily chemical care, industrial water treatment, and metal processing industries.

Daily Chemicals (Most Common)

Günlük Kimyasal Ürünler

Body wash, laundry liquid, dish soap, and other liquid detergents
Softens hard water, improves detergency and foamability
Prevents soap scum formation, chelates metal ions, stabilizes formulations

Cosmetics & Personal Care

Creams, lotions, soaps, shampoos
Chelates metal ions to prevent oxidative degradation of ingredients
Extends product shelf life and maintains texture stability

Industrial Water Treatment

Boiler & Circulating Water Treatment

Used as scale inhibitor and scale remover
Prevents new scale formation, can dissolve some existing scale
Inhibits equipment corrosion, extends system life

Atık Su Arıtma

Electroplating wastewater, printing & dyeing wastewater
Chelates heavy metals such as copper, nickel, lead, and zinc
Sonraki çökeltme veya geri kazanım için ağır metal toksisitesini azaltır

Metal Cleaning & Polishing

Removes rust and oxide scale from metal surfaces
Improves metal surface finish

EDTA-2Na Packaging & Storage

Müşterilerimizin farklı ihtiyaçlarını karşılamak için esnek ambalaj çözümleri sunuyoruz.

25kg Torba

Taşıma ve depolama sırasında ürünün stabilitesini sağlamak için nem geçirmez fonksiyona sahip standart toz ambalaj.

Özelleştirilmiş Ambalaj

TENESSY ayrıca jumbo torbalar, kağıt torbalar veya markalı OEM torbalar dahil olmak üzere özelleştirilmiş paketleme hizmetleri de sağlayabilir.

Request Your Free EDTA-2Na Sample

Experience the stable chelation performance of high-purity EDTA-2Na in your neutral/weakly acidic system firsthand.

At Tenessy, experience our EDTA-2Na product firsthand with a FREE sample!
- Örnek Büyüklüğü: 25kg veya 50kg.
- Nakliye: FedEx veya DHL ile hızlı.
- Servis: Uzman formül ayarlama desteği.

SSS

Q1: Can EDTA-2Na and EDTA-4Na be used interchangeably?

Doğrudan ikame tavsiye edilmez. pH değerleri önemli ölçüde farklıdır, bu da nihai formülasyon pH'ını değiştirerek şelasyon etkinliğini ve sistem stabilitesini etkileyebilir. Değiştirme gerekliyse, pH ve diğer bileşenleri buna göre yeniden formüle edin.

Q2: What is the typical dosage of EDTA-2Na in cosmetics?

Typically 0.05% – 0.2% of the total formulation. This is sufficient to chelate trace metal ions from raw materials and prevent oxidative degradation. The specific dosage should be determined based on formulation components and stability testing.

Q3: Does EDTA-2Na contain phosphorus?

No. For regions with phosphate bans or environmentally sensitive detergent and water treatment formulations, EDTA-2Na can be used as a phosphorus-free chelating agent.