Potassium Phosphate Monobasic CAS#7778-77-0

Stable physical and chemical properties: High purity and mild performance, stable at room temperature without decomposition and deterioration.


Excellent solubility: Fast water solubility with clear solution, suitable for various proportioning.


Superior buffering capacity: Effectively stabilizes system pH for formulation deployment.


Standard storage & operation: Store sealed and dry, operate with dust protection, avoid mixing with strong oxidants.


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Product Description

Product Description of Potassium Phosphate Monobasic CAS#7778-77-0

Potassium Phosphate Monobasic is a high-quality inorganic phosphate raw material. It appears as white crystalline powder or colorless crystals with no odor and salty taste. It is easily soluble in water and the aqueous solution is weakly acidic, while insoluble in ethanol. With stable physical and chemical properties, high purity and few impurities, it is a widely used fine chemical and agricultural basic raw material.


Product Application of Potassium Phosphate Monobasic CAS#7778-77-0

Potassium Phosphate Monobasic is mainly used as pH buffer, nutritional supplement, food additive, feed additive and industrial auxiliary agent. It is widely applied in agriculture as an efficient phosphorus-potassium compound fertilizer to promote crop growth, in food industry for pH adjustment and taste improvement, and in feed industry to supplement essential nutrients. It is also used in chemical buffer solution preparation, pharmaceutical excipients, water treatment and electronic industry.

Product Information

Parameters


Melting point

252.6 °C (lit.)

Boiling point

> 450 °C

bulk density

1200kg/m3

density

2.338 g/mL at 25 °C (lit.)

vapor pressure

0Pa at 25℃

refractive index

1.4864

storage temp.

Store at +5°C to +30°C.

solubility

H2O: 1.5 M at 20 °C, clear, colorless

form

powder

color

White transparent

Specific Gravity

2.338

Odor

Odorless

PH

4.2-4.6 (20g/l, H2O, 20℃)

pka

(1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)

biological source

rabbit

Water Solubility

222 g/L (20 ºC)

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: 0.046


λ: 280 nm Amax: 0.040

Decomposition

253 °C

Merck

147,659

Specific Activity

25-33nmol/min·mg

Stability:

Hygroscopic

Cosmetics Ingredients Functions

BUFFERING

InChI

1S/K.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1

InChIKey

GNSKLFRGEWLPPA-UHFFFAOYSA-M

SMILES

[K+].OP(O)([O-])=O

CAS DataBase Reference

7778-77-0(CAS DataBase Reference)

EPA Substance Registry System

Monopotassium phosphate (7778-77-0)

Absorption

≤0.01 at 260nm


≤0.01 at 280nm


Safety Information


Hazard Codes


WGK Germany

WGK 1

RTECS

TC6615500

TSCA

TSCA listed

HS Code

2835240000

Storage Class

11 - Combustible Solids

Hazardous Substances Data

7778-77-0(Hazardous Substances Data)

Toxicity

LD50 skin in rabbit: > 4640mg/kg


Factory Showcase

拼图_美图设计室-(1)

Quality Control Lab

实验室

Shipping And Transportation

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FAQ

Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


Q2: How is the security of my transaction guaranteed when working with Huafeng Chemical?
A: We strictly adhere to international trade rules (Incoterms® 2020) and accept various payment methods, such as Letters of Credit (L/C) and Telegraphic Transfers (T/T). For new clients, we support small-batch trial orders and can clearly define arbitration clauses and applicable laws within the contract. Additionally, we maintain a robust risk management system to help you mitigate common trade risks, such as exchange rate fluctuations, shipping delays, and document discrepancies.


Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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