Ortho-Phosphoric-Acid.com | Premium Phosphoric Acid & Phosphates Manufacturer

About Wengfu & Zijin

Wengfu & Zijin Chemical Industry Co., Ltd. is the leading manufacturer of Phosphoric Acid, phosphorus compound fertilizers, and fine phosphates in China. As a state-owned holding large-scale phosphorus chemical enterprise, we integrate production, scientific research, and trade of phosphorus-based products.

We have achieved multiple internationally and domestically leading technological innovation milestones and hold numerous patents. Our operations follow circular economy principles with comprehensive resource utilization, earning us recognition as a national green factory and an environmentally responsible enterprise in China.

Leveraging our technological advantages, we are committed to supplying high-quality phosphate products at competitive prices, aiming to become your trusted long-term partner in China.

Why Choose Us?

ISO & GMP Compliant Manufacturing Standards
National Green Factory Certification
Over 20 Years of Industry Leadership
Global Export Experience to 50+ Countries
Competitive Pricing with Consistent Quality

Our Product Range

Phosphoric Acid 85% (Food Grade)

CAS: 7664-38-2 | H3PO4

Purity: 85% min
Chloride: ≤ 0.0005%
Heavy Metals (Pb): ≤ 0.0005%
Fluoride: ≤ 0.001%
Appearance: Clear liquid

Phosphoric Acid 85% (Tech Grade)

Industrial & Chemical Processing Use

Purity: 85% min
High thermal stability

Low impurity profile

Corrosion-resistant packaging

Consistent batch quality

Sodium Tripolyphosphate (STPP)

Technical & Food Grade Available

Formula: Na5P3O10

High chelating capacity

Used in detergents, food processing

Excellent water softening

White powder or granular form

Sodium Acid Pyrophosphate (SAPP 28)

Food Grade Leavening Agent

Formula: Na2H2P2O7

Used in baking powders

Controlled reaction rate

High purity, low metal content

Stable storage properties

Tetra Potassium Pyrophosphate (TKPP)

Food & Industrial Applications

Formula: K4P2O7

Excellent emulsifier

Used in dairy & meat products

High solubility in water

Stable pH buffering capacity

Tetra Sodium Pyrophosphate (TSPP)

Food & Water Treatment Grade

Formula: Na4P2O7

Used in canned seafood, meats

Prevents discoloration & spoilage

Highly soluble crystalline powder

Low chloride & sulfate content

Monoammonium Phosphate (MAP)

High-Efficiency Fertilizer

N-P-K: 11-52-0

Water-soluble granular form

Low chloride, ideal for drip irrigation

Acidifying effect on soil

Used in greenhouse & hydroponics

Diammonium Phosphate (DAP)

Nitrogen-Phosphorus Fertilizer

N-P-K: 18-46-0

High phosphorus content

Granular, free-flowing product

Used in broad-acre farming

Excellent storage stability

Monopotassium Phosphate (MKP)

High-Purity Fertilizer & Additive

Formula: KH2PO4

Water-soluble, chloride-free

Used in foliar sprays & fertigation

Source of K & P for crops

Also used in food & pharma

Triple Super Phosphate (TSP)

Concentrated Phosphate Fertilizer

P2O5: 44-46%

Low cadmium content

Granular or prilled form

Used in row placement & broadcasting

High agronomic efficiency

MCP / MDCP / DCP / TCP

Feed Additives for Animal Nutrition

Calcium & Phosphorus sources

High bioavailability

Used in poultry, swine, ruminants

Supports bone development

Complies with feed safety standards

DSP & MSP

Specialty Phosphates for Industry

DSP: Disodium Phosphate

MSP: Monosodium Phosphate

Buffering & chelating agents

Used in water treatment, food, textiles

High purity, consistent performance

Our Capabilities

Quality Assurance

Every batch undergoes rigorous testing to meet food, technical, and agricultural standards. Our lab ensures compliance with global purity and safety requirements.

Efficient Production

As a large-scale integrated enterprise, we combine production, R&D, and trade to deliver consistent supply and competitive pricing globally.

Sustainable Innovation

We are a certified green factory, utilizing circular economy models and eco-friendly processes to minimize environmental impact while maximizing efficiency.

Frequently Asked Questions

What is the difference between food grade and technical grade phosphoric acid?

Food grade phosphoric acid meets strict purity standards for use in food and beverage applications, with lower levels of impurities such as heavy metals, chloride, and sulfate. Technical grade is suitable for industrial processes where ultra-low impurities are not required.

Can you provide certificates of analysis (COA) for your products?

Yes, we provide a Certificate of Analysis with every shipment, detailing the exact specifications and test results for the batch, including purity, impurity levels, and physical properties.

What packaging options do you offer?

We offer IBC totes (1000L), 200L drums, 25kg bags, and bulk tankers depending on product and order volume. All packaging is designed for safe transport and long-term storage.

Do you export internationally?

Yes, we export to over 50 countries worldwide. We handle all export documentation, logistics coordination, and compliance with international regulations.

Are your phosphate fertilizers suitable for organic farming?

While our fertilizers are highly efficient and low in contaminants, they are chemically synthesized. Please consult your certifying body to determine compliance with specific organic standards.

Get in Touch

For inquiries, quotes, or technical support, please visit our official website to contact us directly.

Visit Official Website

Email: sales@ortho-phosphoric-acid.com

Address: No.13, Gongye Road, Pingpu Village, Jiaoyang Township, Shanghang County, Longyan City, Fujian Province, China