Smelting - Hongding Chem Chemical Reagents Wed, 18 Jun 2025 02:29:26 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 246622208 Sodium Bicarbonate https://hongdingintl.com/products/sodium-bicarbonate/ Fri, 13 Jun 2025 02:37:43 +0000 http://www.hongdings.com/?post_type=product&p=3053 Sodium Bicarbonate is white crystalline powder, widely used as food additives, feed additives, flux for casting, color-fixing agent, extinguisher raw materials, pharmaceutical raw materials...

The post Sodium Bicarbonate appeared first on Hongding Chem.

]]> Product Name: Sodium Bicarbonate
CAS No: 144-55-8
Einecs No: 205-633-8
HS Code: 28363000
Formula: NaHCO3
Grade Standard: Tech Grade, Food Grade
Appearance: White crystalline powder
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Food Industry: Softening agent, vegetable color-preserving, starter culture, carbon dioxide generator;
Fire fighting: Raw material for fire extinguisher
Metallurgical industry: Flux for casting, flue gas desulfurization & denitrification agent for smelting;
Printing & dyeing: Color-fixing agent, acid-base buffer agent
Agriculture: Feed additives
Medicine: Raw materials

Specification

Item Range Unit Standard
Total alkali (NaHCO3 count) Between ω/% 99.0-100.5
Loss on drying ≤ ω/% 0.2
PH (10g/L aqueous solution) ≤ ω/% 8.5
Arsenic (As) ≤ ω/% 0.0001
Heavy metals (as Pb) ≤ ω/% 0.0005
Ammonium salt content – – Pass test

The post Sodium Bicarbonate appeared first on Hongding Chem.

]]> 3053 Lead Oxide (Litharge) https://hongdingintl.com/products/lead-oxide-litharge/ Wed, 07 May 2025 06:38:40 +0000 http://www.hongdings.com/?post_type=product&p=2939 Lead Oxide (Litharge), insoluble in water and ethanol, soluble in nitric acid, acetic acid, and hot alkaline solutions. Used as pigments, metallurgical fluxes (like refining of gold), paint driers, rubber vulcanization accelerators, pesticides.

The post Lead Oxide (Litharge) appeared first on Hongding Chem.

]]> Product Name: Lead Oxide (Litharge)
CAS No: 1317-36-8
Einecs No: 215-626-1
HS Code: 2824100000
Formula: PbO
Grade Standard: Tech Grade
Appearance: Yellow powder or granules
Packaging Details: 25KG/BAG, 1000KG/BAG
Application: Pigments, metallurgical fluxes (like refining of Gold), paint driers, rubber vulcanization accelerators, pesticides.

Specification:

Item Standard
Purity (on dry basis) 99% min
Acid insolubles 0.1% max
Moisture 0.2% max
Fe2O3 0.05% max
Au 2 ppb max
Ag 0.2 ppm max

The post Lead Oxide (Litharge) appeared first on Hongding Chem.

]]> 2939 Silica Flour (Silicon Dioxide) https://hongdingintl.com/products/silica-flour-silicon-dioxide/ Sat, 19 Apr 2025 02:36:34 +0000 http://www.hongdings.com/?post_type=product&p=2929 Mainly used at Glass manufacturing, Refractory materials (furnace linings), Ferrosilicon smelting, Coatings & rubber fillers, Metallurgical fluxes (gold refining), Ceramics, Abrasive materials, Metal surface treatment

The post Silica Flour (Silicon Dioxide) appeared first on Hongding Chem.

]]> Product Name: Silica Flour (Silicon Dioxide)
CAS No: 14808-60-7
Einecs No: 238-878-4
HS Code: 2505100000
Formula: SiO2
Grade Standard: Tech Grade
Appearance: White fine powder
Packaging Details: 25KG/BAG, 1000KG/BAG
Application: Mainly used at Glass manufacturing, Refractory materials (furnace linings), Ferrosilicon smelting, Coatings & rubber fillers, Metallurgical fluxes (gold refining), Ceramics, Abrasive materials, Metal surface treatment.

Specification

Item Specification
SiO2 Content (%) 99.90%
Fe2O3 Content (%) 0.01%
Al2O3 Content (%) 0.15%
MgO Content (%) 0.01%
CaO Content (%) 0.01%
P2O5 Content (%) 0.00%
Particle Size 200M – 6000M

The post Silica Flour (Silicon Dioxide) appeared first on Hongding Chem.

]]> 2929 Anhydrous Borax https://hongdingintl.com/products/anhydrous-borax/ Wed, 16 Apr 2025 05:51:52 +0000 http://www.hongdings.com/?post_type=product&p=2924 Used as a fluxing agent in manufacturing high-quality glass, enamel glazes, soldering fluxes, non-ferrous metals (like refining of Gold), and alloys. Anhydrous borax is the foundational material for synthesizing boron-containing compounds.

The post Anhydrous Borax appeared first on Hongding Chem.

]]> Product Name: Anhydrous Borax
CAS No: 1330-43-4
Einecs No: 215-540-4
HS Code: 2840110000
Formula: Na2B4O7
Grade Standard: Tech Grade
Appearance: White crystalline or vitreous powder
Packaging Details: 25KG/BAG, 1000KG/BAG
Application: Used as a fluxing agent in manufacturing high-quality glass, enamel glazes, soldering fluxes, non-ferrous metals (like refining of Gold), and alloys. Anhydrous borax is the foundational material for synthesizing boron-containing compounds.

Specification:

No. Item Standard
1 Na2B4O7 ≥95%
2 B2O3 ≥68%
3 Na2O ≥31%
4 SO4 ≤0.4%
5 Cl ≤0.05%
6 Water Insoluble ≤0.06%
7 Moisture ≤0.5%
8 Average Grading 60-200 mesh

The post Anhydrous Borax appeared first on Hongding Chem.

]]> 2924 Sodium Bisulfate https://hongdingintl.com/products/sodium-bisulfate/ Tue, 06 Aug 2024 02:44:00 +0000 http://www.hongdings.com/product/anchor-bracelet-2/ Sodium Bisulfate is white granular, used as flux in mining smelting, dyeing aid for acid dyes in dyeing, disinfectant and detergent component in pharmaceutical industry. It is also used for making sulfate, solid chlorine dioxide and sodium alum.

The post Sodium Bisulfate appeared first on Hongding Chem.

]]> Product Name: Sodium Bisulfate
CAS No: 7681-38-1
Einecs No: 231-665-7
HS Code: 2833190000
Formula: NaHSO4
Grade Standard: Tech Grade
Appearance: White granular
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Mining: Flux for mineral decomposition
Printing and Dyeing: Dyeing aid for acid dyes
Pharmaceutical industry: Disinfectant and detergent component
Chemical industry: Making sulfate, solid chlorine dioxide and sodium alum

Specification:

Item Range Unit Standard
Sodium bisulfate (NaHSO4) ≥ ω/% 95
Iron (Fe) ≤ ω/% 0.003
Water insoluble ≤ ω/% 0.1
Chloride (as Cl) ≤ ω/% 0.03

The post Sodium Bisulfate appeared first on Hongding Chem.

]]> 1198