Sodium Phosphate Dibasic CAS#7558-79-4

Excellent Water Solubility & Hygroscopicity:Highly soluble and moisture-absorbing, ensuring rapid dissolution and stable performance in formulations.


Ideal Buffer Component:Commonly used with sodium phosphate monobasic to prepare reliable organic and biochemical buffer systems.


Nutritional & Physiological Support:Provides essential sodium and phosphate for normal nerve and muscle function and can be used as a dietary supplement.


Wide Food & Water Treatment Applications:Applied in food processing and water treatment, often in combination with trisodium phosphate for effective conditioning.


Phone :+86 13165319682
WhatsApp :+86 13165319682
Email :admin@sdhf-chemical.com
Send Inquiry →

Product Description

Product Description of ‌Sodium Phosphate Dibasic CAS#7558-79-4

Sodium phosphate dibasic is a highly hygroscopic, water-soluble salt. Used with sodium phosphate monobasic to make buffers for biochemical/analytical assays, it serves as a sodium/phosphate nutritional supplement and is applied in food processing and water treatment (often with trisodium phosphate).


Product Application of Sodium Phosphate Dibasic CAS#7558-79-4

Sodium phosphate dibasic is a laboratory reagent and buffering agent used in ceramics, detergents, enamels, textile dyeing, fireproofing, silk processing and boiler water treatment. It also serves as a food sequestrant, nutritional supplement, fertilizer component, soldering enamel ingredient and mild laxative.


Product Information

Parameters


Melting point243-245 °C
density1.064 g/mL at 20 °C
bulk density880kg/m3
vapor density4.9 (vs air)
vapor pressure0Pa at 20℃
FEMA2398 | DISODIUM PHOSPHATE
storage temp.Store at +5°C to +30°C.
solubilityH2O: 0.5 M at 20 °C, clear, colorless
formpowder
colorWhite
Odorodorless
PH8.9-9.2 (25℃, 50g/L in water)
pka(1) 2.15, (2) 6.82, (3) 12.38 (at 25℃)
biological sourcesynthetic
Water Solubility>=10 g/100 mL at 20 ºC
λmaxλ: 260 nm Amax: 0.019
λ: 280 nm Amax: 0.016
SensitiveHygroscopic
Merck148,659
Stability:Stable. Incompatible with strong acids. Hygroscopic.
InChIKeyBNIILDVGGAEEIG-UHFFFAOYSA-L
LogP-2.15
CAS DataBase Reference7558-79-4(CAS DataBase Reference)
EPA Substance Registry SystemDisodium phosphate (7558-79-4)
Absorption≤0.01 at 260nm
≤0.01 at 280nm


Safety Information


Hazard CodesXi
Risk Statements36/37/38
Safety Statements26-36-24/25
RIDADRUN 3077 9 / PGIII
WGK Germany3
RTECSWC4500000
F3
TSCAYes
HS Code28352200
Hazardous Substances Data7558-79-4(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: > 2000 mg/kg


Factory Showcase

拼图_美图设计室-(1)

Quality Control Lab

实验室

Shipping And Transportation

拼图_美图设计室

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.

Contact Us

Submit

Recommendation