Sodium Metasilicate Pentahydrate

Sodium Metasilicate Pentahydrate

CAS No.: 10213-79-3
Molecular Formula: H5NaO4Si
Molecular Weight: 120.11
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product description

Sodium Metasilicate Pentahydrate is a white crystalline solid with strong alkalinity and good dispersibility. It is widely used in heavy-duty detergents, metal cleaning, textile pretreatment, ceramics, and industrial cleaning formulations.


Chemical Properties

PropertyValue
Melting point1088°C
Density2.61
Refractive index1.52
Storage conditionStore at room temperature
FormSolid
ColorWhite
OdorOdorless
pH value12.5 (in aqueous solution: 10 g/L, 20°C)
Water solubilitySoluble in cold water.
Merck14,8642
InChI1S/2Na.O3Si.5H2O/c;1-4(2)3;;;;;;/h;;;;5*1H2/q2+1;-2;;;;;;
InChIKeyADPGGKZKXGXANON-UHFFFAOYSA-N
SMILESO.O.O.O.[Na+].[Na+].[O-]Si=O
CAS database10213-79-3 (CAS DataBase Reference)
EPA chemical substance informationSilicic acid (H₂SiO₃), disodium salt, pentahydrate (10213-79-3)


Product Usage

Sodium Metasilicate Pentahydrate is a versatile inorganic salt that integrates cleaning, buffering, emulsifying, and anti-corrosive properties. In the detergent industry, it is a core component for high-performance laundry powders, dishwashing liquids, and industrial cleaners, serving as an eco-friendly alternative to STPP to enhance detergency. In metal surface treatment, it is widely used for metal cleaning and corrosion inhibition, forming a protective film on metal surfaces to suppress acidic erosion. Additionally, it acts as a highly effective dispersant for slurry deflocculation in the ceramic industry and serves as a scouring and bleaching auxiliary in textile dyeing. In the petroleum and construction sectors, it plays a vital role as a mud consistency controller and a concrete accelerator.

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Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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Q1: What international standards do your products and services comply with?

A1: Our products fully comply with international standards such as REACH, MSDS, and COA, and we strictly implement the ISO9001 quality management system. We can also provide third-party testing reports (SGS, BV, etc.) according to customer needs.


Q2: How long does it take for goods to be delivered to my country?
A2: The delivery time depends on the transport mode and destination country. Generally, sea transport takes 15-30 days, air transport takes 3-7 days, and we will optimize the transport route to shorten the delivery time as much as possible.


Can you provide customs clearance services for dangerous chemicals?
A3: Yes. Our team is proficient in the customs clearance procedures for dangerous chemicals in various countries, and can provide professional compliant declaration and customs clearance services to ensure smooth customs clearance.


Q4: Do you provide customized product and service solutions?
A4: Yes. We can provide personalized product customization and export service solutions according to your specific needs (product specifications, application scenarios, procurement volume, etc.).

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