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Sodium Phosphate

Name: Sodium Phosphate
SKU: 0

CAS No.: 7601-54-9
Molecular Formula: Na3O4P
Molecular Weight: 163.940671

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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

Property	Value
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

Property	Value
Hazard symbols	C, Xi
Hazard class codes	34-36/37/38
Safety descriptions	26-36/37/39-45-24/25
UN dangerous goods number	UN 3262 8/PG 3
WGK Germany	1
RTECS number	TC9490000
F	34
TSCA	TSCA listed
Hazard class	8
Packing group	III
HS code	28352910
Storage class	13 - Non-combustible solids
Hazard class (category)	Eye irritation, Category 2 Skin irritation, Category 2 Specific target organ toxicity – single exposure, Category 3
Hazardous substances data	7601-54-9 (Hazardous Substances Data)
Toxicity	LD50 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.

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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.
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A:Within 3-15 days after we confirm you requirement.

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Q: Do you provide samples?
A:Yes,we could offer the sample for you to test but please pay freight fee.

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