Sodium Phosphate

Sodium Phosphate

CAS No.: 7601-54-9
Molecular Formula: Na3O4P
Molecular Weight: 163.940671
Phone :+8617860115079
WhatsApp :+8617860115079
Email :hualuliam@sdhualuchem.com
90c07ac899b1500ecead6a1c8c56591c
product description

Disodium phosphate has a high degree of hygroscopicity and water solubility. It can be used in combination with sodium monosodium phosphate when preparing biological buffers. It is usually used as a buffer for biological assays. Sodium is essential for the functions of nerves and muscles.


Chemical Properties
PropertyValue

Melting point

243-245 °C

Density

1.064 g/mL at 20 °C

Bulk density

880kg/m3

Vapor density

4.9 (vs air)

Vapor pressure

0Pa at 20℃

FEMA

2398 | DISODIUM PHOSPHATE

Storage temp.

Store at +5°C to +30°C.

Solubility

H2O: 0.5 M at 20 °C, clear, colorless

Form

powder

Color

White

PH

8.9-9.2 (25℃, 50g/L in water)

Pka

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

Odor

odorless

Biological source

synthetic

Water Solubility

>=10 g/100 mL at 20 ºC

Sensitive

Hygroscopic

λmax

λ: 260 nm Amax: 0.019λ: 280 nm Amax: 0.016

Merck

14,8659

Stability:

Stable. Incompatible with strong acids. Hygroscopic.

InChIKey

BNIILDVGGAEEIG-UHFFFAOYSA-L

LogP

-2.15

CAS DataBase Reference

7558-79-4(CAS DataBase Reference)

EPA Substance Registry System

Disodium phosphate (7558-79-4)

Absorption

≤0.01 at 260nm≤0.01 at 280nm


Safety Information

PropertyValue
Hazard symbolsC, Xi
Hazard class codes34-36/37/38
Safety descriptions26-36/37/39-45-24/25
UN dangerous goods numberUN 3262 8/PG 3
WGK Germany1
RTECS numberTC9490000
F34
TSCATSCA listed
Hazard class8
Packing groupIII
HS code28352910
Storage class13 - Non-combustible solids
Hazard class (category)Eye irritation, Category 2
Skin irritation, Category 2
Specific target organ toxicity – single exposure, Category 3
Hazardous substances data7601-54-9 (Hazardous Substances Data)
ToxicityLD50 skin in rabbit: >300 mg/kg


Product Usage

Sodium Phosphate represents a group of versatile inorganic compounds (including MSP, DSP, and TSP) that are essential in various industrial sectors due to their excellent buffering, emulsifying, and sequestering capabilities. In the food industry, it is widely used as a moisture-retention agent, quality improver, and acidity regulator, effectively enhancing the water-holding capacity of meat products and preventing clumping in dairy products. In industrial water treatment, sodium phosphate acts as a crucial scale inhibitor and water softener, preventing boiler scaling by sequestering metal ions. Additionally, it serves as a builder in detergents to enhance cleaning efficiency and as a dyeing assistant in the textile industry. In pharmaceuticals, specific grades are frequently used as saline laxatives or buffering agents in medications.

Factory Showcase
拼图_美图设计室-(1)
Quality Control Lab
实验室
Shipping And Transportation

Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
We only provide highest quality goods available, accompanied by after support!

拼图_美图设计室
Qualification Certificate
  • 微信图片_2026-04-22_130717_131
  • 微信图片_2026-04-22_130720_178
  • 微信图片_2026-04-22_130722_820
  • 微信图片_2026-04-22_130725_370
  • 微信图片_2026-04-22_130728_434
  • 微信图片_2026-04-22_130730_803
  • 微信图片_2026-04-22_130733_947
FAQ

Q1: What international standards do your products and services comply with?

A1: Our products fully comply with international standards such as REACH, MSDS, and COA, and we strictly implement the ISO9001 quality management system. We can also provide third-party testing reports (SGS, BV, etc.) according to customer needs.


Q2: How long does it take for goods to be delivered to my country?
A2: The delivery time depends on the transport mode and destination country. Generally, sea transport takes 15-30 days, air transport takes 3-7 days, and we will optimize the transport route to shorten the delivery time as much as possible.


Can you provide customs clearance services for dangerous chemicals?
A3: Yes. Our team is proficient in the customs clearance procedures for dangerous chemicals in various countries, and can provide professional compliant declaration and customs clearance services to ensure smooth customs clearance.


Q4: Do you provide customized product and service solutions?
A4: Yes. We can provide personalized product customization and export service solutions according to your specific needs (product specifications, application scenarios, procurement volume, etc.).

Contact Us
Submit
Recommendation