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98% High Concentration Potassium Dihydrogen Phosphate for Buffer Agent

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98% High Concentration Potassium Dihydrogen Phosphate for Buffer Agent

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CAS : 7778-77-0

EINECS : 7778-77-0

Appearance : White crystal particle

Crystalline hydrate : Anhydrous crystals

Life spen : Two years

Density : 2.338 g/cm³

Solubility : Dissolve in water

Brand Name : Riel Chemical

Model Number : 98%

Certification : SGS,ISO9001,CE

Place of Origin : Weifang

MOQ : 20 tons

Price : USD 657/TONS FOB

Payment Terms : L/C, T/T

Supply Ability : 50 tons per day

Delivery Time : 5 work day

Packaging Details : 25 kg polyethylene woven bag, moisture-proof, easy to transport

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98% High Concentration Potassium Dihydrogen Phosphate for Buffer Agent
Product Specifications
CAS 7778-77-0
EINECS 7778-77-0
Appearance White crystal particle
Crystalline hydrate Anhydrous crystals
Life span Two years
Density 2.338 g/cm³
Solubility Dissolve in water
Product Description

98% High Concentration Potassium Dihydrogen Phosphate (MKP) is a versatile chemical compound with applications across multiple industries.

Key Attributes
  • Chemical Name: Potassium dihydrogen phosphate (MKP)
  • Molecular formula: KH2PO4
  • Molecular weight: 136.09
  • Available in Industrial grade 98% and Fertilizer (Agricultural/Medicine) grade 98%
  • Meets HG/T 4511-2013 standard requirements
Quality Standards
Analysis Test Method Standard Request
MKP (KH2PO4) content % HG/T 4511-2013 ≥98%
Water insoluble % HG/T 4511-2013 ≤0.3%
PH value (10g/mL) HG/T 4511-2013 4.4～4.6
Chloride (as Cl) ppm HG/T 4511-2013 ＜0.79%
Arsenic (as As) ppm HG/T 4511-2013 ＜0.005%
Moisture HG/T 4511-2013 ＜0.48%
Lead (as Pb) ppm HG/T 4511-2013 ＜4
Loss on drying % HG/T 4511-2013 ＜1
P2O5 (water-soluble) % HG/T 4511-2013 ≥52.1
K2O (water-soluble) % HG/T 4511-2013 ≥34.5

References: Riel Chemical Lab1&2, National public service platform for standards information.

Physicochemical Properties
Molecular weight 163.94 g/mol
Appearance White crystalline or powdery solid
Odor Odorless or slightly sulphide odor
Density 1.62 g/cm³ (dodecahydrate, 20°C)
Melting point approx. 73.4°C (dodecahydrate decomposition)
Chemical Safety Unrestricted goods
Solubility Water: easily soluble in water, aqueous solution is strongly alkaline (pH about 12); Organic solvent: insoluble in ethanol, and other organic solvents
Hydrolysis reaction Fully ionized in water to form phosphate ions and sodium ions
Complexation Form an insoluble precipitate with metal ions (e.g. Ca² +, Mg² +) for softening hard water
Thermal stability It decomposes when heated to high temperatures, forming sodium phosphate and oxygen
Acid base The aqueous solution is strongly basic and can react with acid to form phosphate
98% High Concentration Potassium Dihydrogen Phosphate for Buffer Agent
Applications
1. Agriculture
  • Efficient water soluble fertilizer providing essential phosphorus (P) and potassium (K)
  • Promotes root development, flowering and fruiting, and enhances stress resistance (drought and cold resistance)
  • Foliar spraying quickly supplements nutrients, especially during fruit expansion or nutrient deficiency
  • Ideal for drip irrigation systems and water-fertilizer integration technology
  • Enhances photosynthesis, increases fruit sugar content, and improves color and taste
  • Boosts plant resistance to pests and diseases, reducing pesticide use
  • Neutral pH makes it suitable for various soils without causing acidification or salinization
2. Industrial Applications
  • Buffer and pH regulator: Used in pharmaceutical production (injections, oral liquids) and industry (E340 additive for dairy products, beverages)
  • Surface treatment and plating: Provides phosphorus source in metal plating solutions to enhance corrosion resistance; used in cleaning agents to remove metal surface oxides
  • Ceramic and glass manufacturing: Acts as flux to reduce firing temperature and improve product transparency or strength
3. Laboratory and Scientific Research
  • Buffer solution preparation: Combined with dipotassium hydrogen phosphate (K₂HPO₄) to prepare buffers (pH 4.5-8.0 range) for biological experiments (PCR, enzyme reactions)
  • Analytical reagent: Serves as standard for phosphorus or potassium in spectral analysis or titration
  • Microbial medium: Provides essential phosphorus and potassium for bacterial or fungal cultures
Frequently Asked Questions
What is your payment term?

We accept T/T and L/C at sight as payment terms.

Are you able to deliver on time?

We specialize in this product line with many years of experience. Our customers choose us because we consistently deliver high-quality products on schedule.

Do you provide free samples?

Yes, we provide free samples. Customers only need to cover the express shipping fee.

How about the price? Can you make it cheaper?

Customer benefit is our top priority. Prices are negotiable based on order quantity and other factors, and we guarantee competitive pricing.

Can I visit your company and factory in China?

You're welcome to visit our facility in Weifang, China. We provide airport pickup and drop-off services at Weifang Airport.

What if there is a quality problem?

We have a professional after-sales service team ready to promptly address any quality concerns.


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