Pulp & Paper - Hongding Chem Chemical Reagents Wed, 18 Jun 2025 08:36:33 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 246622208 Sodium Chlorite https://hongdingintl.com/products/sodium-chlorite/ Wed, 18 Jun 2025 07:40:44 +0000 http://www.hongdings.com/?post_type=product&p=3094 Sodium Chlorite is white to yellowish green crystalline powder or granule. It is used as bleaching agent, de-colorizer, disinfectant in food, paper & pulp, textile, water treatment, fine chemistry, leather, metal surface treatment industries.

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]]> Product Name: Sodium Chlorite
CAS No: 7758-19-2
Einecs No: 231-836-6
HS Code: 2828900000
Formula: NaClO2
Grade Standard: Tech Grade
Appearance: White to yellowish green crystalline powder or granule
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Textile: Bleaching agent, de-colorizer
Paper & pulp: Bleaching agent, de-colorizer
Food Processing: Bleaching agent, Disinfectant
Water treatment: Disinfectant
Leather industry: Dehairing
Surface treatment of metal: Corrosion inhibitor
Fine Chemistry: Producing chlorine dioxide

Specification

Item Range Unit Standard
80% 82% 90%
Sodium chlorite (NaClO2) ≥ ω/% 80 82 90
Sodium chlorate (NaClO3) ≤ ω/% 1.1 1 0.8
Sodium hydroxide (NaOH) ≤ ω/% 0.6 0.5 0.4
Sodium carbonate (Na2CO3) ≤ ω/% 0.8 0.6 0.5
Sodium chloride (NaCl) ≤ ω/% 15.6 14.7 9
Sodium sulfate (Na2SO4) ≤ ω/% 0.8 0.7 0.6
Sodium nitrate (NaNO3) ≤ ω/% 0.1 0.1 0.1
Arsenic (As) ≤ ω/% 0.0003 0.0003 0.0003
Mercury (Hg) ≤ ω/% 0.00001 0.00001 0.00001
Lead (Pb) ≤ ω/% 0.0001 0.0001 0.0001

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]]> 3094 Manganese Sulfate Monohydrate https://hongdingintl.com/products/manganese-sulfate-monohydrate/ Wed, 18 Jun 2025 06:22:11 +0000 http://www.hongdings.com/?post_type=product&p=3091 Manganese sulfate monohydrate is pinkish crystalline powder. It is used as feed additive, manganese fertilizer in agriculture, food enrichment in food industry, flotation in mining, dryer agent in paper & pulp, raw material in fine chemistry, mordant in printing & dyeing.

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]]> Product Name: Manganese Sulfate Monohydrate
CAS No: 10034-96-5
Einecs No: 600-072-9
HS Code: 2833299090
Formula: MnSO4·H2O
Grade Standard: Tech Grade, Feed Grade
Appearance: Pinkish crystalline powder
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Agriculture: Feed additive, manganese fertilizer
Food: Food enrichment
Mining: Flotation agent
Paper & pulp: Dryer agent, flocculant
Fine Chemistry: Raw material of manganese salts
Printing & Dyeing: Mordant, paint drying agent

Specification

Item Range Unit Standard
Manganese sulfate (as MnSO4·H2O) ≥ ω/% 98
Manganese (Mn) ≥ ω/% 31.8
Arsenic (As) ≤ ω/% 0.0003
Lead (Pb) ≤ ω/% 0.0005
Cadmium (Cd) ≤ ω/% 0.001

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]]> 3091 Sodium Silicate https://hongdingintl.com/products/sodium-silicate/ Wed, 18 Jun 2025 05:22:29 +0000 http://www.hongdings.com/?post_type=product&p=3089 Sodium silicate is transparent or translucent glass masses. It is used in soap & detergent, paper & pulp, textile, silicone industry, foundry, metal anti-corrosion, construction material and leather industry.

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]]> Product Name: Sodium Silicate
CAS No: 1344-09-8
Einecs No: 215-687-4
HS Code: 2839191000
Formula: Na2O·nSiO2 (1.5≤n≤3.7)
Grade Standard: Tech Grade
Appearance: Transparent or translucent glass masses
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Soap & Detergent: Filler, alkaline buffer, antiseptic
Paper & Pulp: Filler
Textile industry: Sizing, impregnating agents, fixation agents, mordant agents
Silicone industry: Raw material for silicone gel, silicone
Foundry industry: Agglomerant
Metal: corrosion prevention
Construction Material: Agglomerant, raw material of refractory matter, acid-resistant cement…
Leather industry: Softener

Specification

Item Range Unit Standard
High Grade First Grade
Total soluble solids content ≥ ω/% 99 98
Iron (Fe) ≤ ω/% 0.015 0.1
Aluminum oxide (Al2O3) ≤ ω/% 0.15 0.3
modulus ~ – 2.2-2.64; 2.65-3.10; 3.11-3.4; 3.41-3.7

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]]> 3089 Magnesium Sulfate (Hepta) https://hongdingintl.com/products/magnesium-sulfate-hepta/ Wed, 18 Jun 2025 02:39:46 +0000 http://www.hongdings.com/?post_type=product&p=3087 Magnesium sulfate (hepta) is White crystals. It is widely used in food, feed, agriculture, water treatment, household chemicals, paper & pulp, tanning, pharmaceuticals, porcelain industries...

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]]> Product Name: Magnesium Sulfate (Hepta)
CAS No: 10034-99-8
Einecs No: 600-073-4
HS Code: 2833210000
Formula: MgSO4·7H2O
Grade Standard: Tech Grade, Feed Grade
Appearance: White crystals.
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Food: Food fortifier
Feed industry: Feed supplement
Agriculture: Magnesium fertilizer
Water treatment: Flocculant, H regulator,
Household Chemicals: bath salt, toothpaste
Paper & Pulp: PH regulator, filling agent, anticoagulant
Tanning: softening agent, mordant
Pharmaceuticals: Laxative

Specification

Item Range Unit Standard
Superior Grade First Grade
Content (MgSO4·7H2O) ≥ ω/% 99.5 98
Magnesium sulfate (MgSO4) ≤ ω/% 48.59 47.85
Magnesium oxide (MgO) ≤ ω/% 16.27 15.93
Magnesium (Mg) ≤ ω/% 9.81 9.56
Chloride (as Cl) ≤ ω/% 0.1 0.2
Iron (Fe) ≤ ω/% 0.002 0.003
Water insoluble matter ≤ ω/% 0.02 0.05
Heavy metals (as Pb) ≤ ω/% 0.0008 0.0008
Arsenic (As) ≤ ω/% 0.0002 0.0002
PH ~ – 5~9 5~9
Particle ~ mm 0.1~1, 1~3, 2~4 –

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]]> 3087 Sodium Carboxymethyl Cellulose (CMC) https://hongdingintl.com/products/sodium-carboxymethyl-cellulose-cmc/ Sat, 14 Jun 2025 03:18:57 +0000 http://www.hongdings.com/?post_type=product&p=3063 Sodium Carboxymethyl Cellulose (CMC) is white to yellowish fibrous powder. It is used as thickening agent, emulsifier, depressant in food, mining, detergent, printing & dyeing, paper & pulp, water treatment, petroleum industry.

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]]> Product Name: Sodium Carboxymethyl Cellulose (CMC)
CAS No: 9004-32-4
Einecs No: 618-378-6
HS Code: 3912310000
Formula: [C6H7O2(OH)2OCH2C00Na]n
Grade Standard: Tech Grade, Food Grade
Appearance: White to yellowish fibrous powder
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Food Industry: Thickening agent, emulsifier, water-retaining agent
Detergent: Surfactant, Anti-stain reattachment agent
Mining: Depressant, thickening agent
Printing & dyeing: Adhesive, sizing agent
Petroleum industry: Viscosity builder, filter loss reducer and detergent
Paper & pulp: Sizing agent
Water treatment: Flocculant

Specification

Item Range Unit Standard Grades
Food Mining Detergent
Purity (CMC) ≥ ω/% 99.5 80 55
Viscosity (1% solution, 25°C) ~ mPa·s 20-6000 100-2000 –
Viscosity (2% solution, 25°C) ~ mPa·s – – 5-3000
Degree of substitution ~ ω/% 0.7-0.9 0.7-0.9 0.5-0.9
PH (10g/L solution) ~ – 6.0-8.5 6.5-8.0 8.0-11.5
Moisture ≤ ω/% – 10 10
Loss on drying ≤ ω/% 8 – –
Sodium glycolate ≤ ω/% 0.4 – –
Chloride (as NaCl) ≤ ω/% 0.5 – –
Sodium (Na) ≤ ω/% 12.4 – –
Arsenic (As) ≤ mg/kg 2 – –
Lead (Pb) ≤ mg/kg 2 – –

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]]> 3063 Ferrous Chloride https://hongdingintl.com/products/ferrous-chloride/ Sat, 07 Jun 2025 06:26:12 +0000 http://www.hongdings.com/?post_type=product&p=3047 Ferrous Chloride is used for wastewater treatment of dyeing & printing, papermaking, leather processing, electroplating. It is also used as reduction agents & mordants in dyeing and manufacturing, and used as raw material in making Ferric chloride, polymeric ferric chloride, polymeric ferric aluminum chloride.

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]]> Product Name: Ferrous Chloride
CAS No: 7758-94-3
Einecs No: 680-591-5
HS Code: 2827399000
Formula: FeCl2·4H2O
Grade Standard: Tech Grade
Appearance: Green crystals/liquid
Packaging Details: 25KG/BAG, 1000KG/DRUM

Application:
Wastewater treatment： Dyeing and printing, papermaking, leather processing, electroplating
Reduction agents & mordants: Dyeing and manufacturing
Raw material： Ferric chloride, polymeric ferric chloride, polymeric ferric aluminum chloride

Specification:

Item Range Unit Standard
Solid Liquid
Ferrous chloride (FeCl2) ≥ ω/% 60 30
Acid insoluble matter ≤ ω/% 0.1 0.1
Free acid (as HCl) ≤ ω/% 0.3 0.3
Arsenic (As) ≤ ω/% 0.0005
Lead (Pb) ≤ ω/% 0.004
Mercury (Hg) ≤ ω/% 0.00002
Cadmium (Cd) ≤ ω/% 0.0005
Chromium (Cr) ≤ ω/% 0.005
Zinc (Zn) ≤ ω/% 0.01
Iron (Fe) ≤ ω/% 0.05
Copper (Cu) ≤ ω/% 0.005
Manganese (Mn) ≤ ω/% 0.1

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]]> 3047 Sodium Chlorate https://hongdingintl.com/products/sodium-chlorate/ Fri, 06 Jun 2025 07:12:37 +0000 http://www.hongdings.com/?post_type=product&p=3046 Sodium Chlorate is white to yellowish crystals, mainly used in water purification, papermaking, tanning, herbicide, medicine, metallurgy, chemicals, enamel, perchlorate, chlorite, and etching liquids...

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]]> Product Name: Sodium Chlorate
CAS No: 7775-09-9
Einecs No: 231-887-4
HS Code: 2829110000
Formula: NaClO3
Grade Standard: Tech Grade
Appearance: White to yellowish crystals
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Used in water purification, papermaking, tanning, herbicide, medicine, metallurgy, chemicals, enamel, perchlorate, chlorite, and etching liquids…

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]]> 3046 Aluminium Sulfate https://hongdingintl.com/products/aluminium-sulfate/ Wed, 07 May 2025 07:27:15 +0000 http://www.hongdings.com/?post_type=product&p=2940 Aluminum Sulfate, soluble in water, acids, and bases, insoluble in alcohols. It forms acidic aqueous solutions, hydrolyzes to produce aluminum hydroxide. Mainly used as flocculant in water Treatment, precipitation agent & sizing agent in papermaking, decolorizer & deodorizer in petroleum...

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]]> Product Name: Aluminium Sulfate
CAS No: 10043-01-3
Einecs No: 233-135-0
HS Code: 2833220000
Formula: Al2(SO4)3
Grade Standard: Food Grade, Tech Grade
Appearance:
Class I: white flakes, lumps, granules or powder;
Class II: gray or yellow flakes, lumps, granules or powder.
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Papermaking: Precipitation agent & sizing agent
Water Treatment: Flocculant
Fire Safety: Foam stabilizer (fire extinguishers)
Chemical Production: Raw material for alum & aluminum white
Petroleum: Decolorizer & deodorizer
Edible Oils: Clarifying agent
Pharmaceuticals: Drug precursor
Other Uses: Leather tanning, synthetic gemstones, high-purity ammonium alum

Specification:

Item Standard
Class I Class II
Aluminum oxide (Al2O3) ω/% ≥ 16 ≥ 15.8
Iron (Fe) ω/% ≤ 0.005 ≤ 0.3
Water insoluble matter ω/% ≤ 0.1 ≤ 0.1
pH ≥ 3 ≥ 3

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]]> 2940 Sodium Sulfide https://hongdingintl.com/products/sodium-sulfide/ Tue, 06 Aug 2024 02:44:02 +0000 http://www.hongdings.com/product/blue-denim-shorts/ Widely used in mining industry, dye industry, printing and dyeing industry, leather industry, paper industry, textile industry, pharmaceutical industry, production of sulfides...

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]]> Product Name: Sodium Sulfide
CAS No: 1313-82-2
Einecs No: 215-211-5
HS Code: 2830101000
Formula: Na2S
Grade Standard: Tech Grade
Appearance: Light yellow flakes
Packaging Details: 25KG/BAG, 1000KG/BAG

Application:
Mining Industry: Sulfidising agent and depressant for base metal ores.
Dye industry: Producing sulfur dyes.
Printing and dyeing industry: As leveling agent for dissolving sulfur dyes.
Leather industry: Depilating raw hides through hydrolysis, making polysulfide for dried hides softening.
Paper industry: As pulping agent.
Textile industry: Denitration of synthetic fibers, reduction of nitrates, and mordant for cotton dyeing.
Pharmaceutical industry: Producing antipyretic drugs such as phenacetin.
Production of sulfides: Sodium thiosulfate, sodium hydrosulfide, and sodium polysulfide.

Specification:

Item Range Unit Standard
Class I (Low Iron)
Yellow Alkali		 Class II (General)
Red Alkali
Sodium sulfide (Na₂S) ≥ ω/% 60 60
Sodium sulfite (Na₂SO₃) ≤ ω/% 1 –
Sodium thiosulfate (Na₂S₂O₃) ≤ ω/% 2.5 –
Iron (Fe) ≤ ω/% 0.002 0.015
Water insoluble ≤ ω/% 0.05 0.15
Sodium carbonate (Na₂CO₃) ≤ ω/% 2 3.5

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]]> 1206 Sodium Hydrosulfite https://hongdingintl.com/products/sodium-hydrosulfite/ Tue, 06 Aug 2024 02:44:02 +0000 http://www.hongdings.com/product/dnk-red-sports-shoes/ Sodium hydrosulfite is a white crystalline powder with sulfurous odor. It's a versatile bleaching agent that can be used in textile industry, food industry, paper & pulping industry, soap, animal (plant) oil, bamboo utensils...

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]]> Product Name: Sodium Hydrosulfite
CAS No: 7775-14-6
Einecs No: 231-890-0
HS Code: 2831101000
Formula: Na2S2O4
Grade Standard: Food Grade, Tech Grade
Appearance: White crystalline powder
UN No.: 1384
Packaging Details: 25KG/BAG, 50KG/BAG
Application:
A versatile bleaching agent that can be used in textile industry, food industry, paper & pulping industry, soap, animal (plant) oil, bamboo utensils…

Specification:

Item Range Unit Standard
Food grade Industrial grade
High-Class		 Industrial grade
First-Class
Sodium dithionite (Na₂S₂O₄) ≥ ω/% 88 90 88
Clarity – – Pass test – –
Heavy metals (as Pb) ≤ ω/% 0.001 – –
Lead (Pb) ≤ ω/% 0.0005 – –
Cadmium (Cd) ≤ ω/% 0.0002 – –
Arsenic (As) ≤ ω/% 0.0001 – –
EDTA – ω/% Qualified – –
Zinc (Zn) ≤ ω/% 0.03 – –
Formate (as HCHO) ≤ ω/% 0.005 – –

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