Phosphoric Acid Supplier & Manufacturer | Cas 7664 38 2

Phosphoric Acid

Phosphoric acid, also known as orthophosphate, is a common inorganic acid with the formula H3PO4 and a molecular weight of 97.995. Phosphoric acid is not easy to volatilize, not easy to decompose, almost no oxidation, with acid commonness, is a ternary weak acid, its acidity is weaker than hydrochloric acid, sulfuric acid, nitric acid, but stronger than acetic acid, boric acid, etc. Phosphoric acid is easily deliquesced in the air, and heat will lose water to get pyrophosphoric acid, and then further lose water to get metaphosphate.

Belong to strong acid, phosphate crystallization point (freezing point) for 21 ºC, precipitation when temperature below the half water (ice) chip.Usually phosphate in above 10 ºC or more, of course, also not knot under low temperature (ice) crystal, this is due to the nature of phosphate is too cold, also is the actual listing of phosphate in 21 ºC will deviate from its junction (ice) crystal point, not immediately (ice) crystal phenomenon exists.But at such a low temperature for a period of time, phosphoric acid can easily form crystals in its resting state.

Phosphoric acid crystals, like other liquid crystals, are physical rather than chemical changes.The chemical properties will not be changed by crystallization, that is, the quality of phosphoric acid will not be affected by crystallization, as long as the temperature melting or heating water dilution solution, still can be used normally.

Where to buy 7664-38-2

Specification of Phosphoric Acid

CAS No.	7664-38-2
HS Code	2809201100
UN No.	UN 1805
Grade	industry grade 85% Food grade 85%
Packing	35kg drum 26.6 tons/20’FCL 330kg drum 26.4 tons/20’FCL 1650 IBC drum 26.4 tons/20’FCL
Character
Density	2.2± 0.1g /cm3
Boiling point	158.0±0.0 °C at 760 mmHg
Melting point	~40 °C(lit.)
Molecular formula	H3O4P
Molecular weight	97.995
Accurate mass	97.976898
PSA	87.57,000
LogP	-2.15
Appearance	Transparent liquid
Vapor density	3.4 (vs air)
Vapor pressure	1.4±0.6 mmHg at 25°C
Refractive index	1.510

Phosphoric Acid Use

1. Phosphoric acid is used for fertilizers
2. Food-grade phosphoric acid (additive E338) is used to acidify foods and beverages such as various colas and jams, providing a tangy or sour taste.
3. In anti-rust treatment by phosphate conversion coating or passivation
4. As an external standard for phosphorus-31 nuclear magnetic resonance.
5. In phosphoric acid fuel cells.
6. In activated carbon production.
7. In compound semiconductor processing, to etch Indium gallium arsenide selectively with respect to indium phosphide.
8. In microfabrication to etch silicon nitride selectively with respect to silicon dioxide.
9. As a pH adjuster in cosmetics and skin-care products.
10. As a sanitizing agent in the dairy, food, and brewing industries.

Advantages of Phosphoric Acid

A Decade of Experience
With over 10 years in the industry, our products are trusted by clients across Europe, North and South America, the Middle East, Asia, the Pacific, and Africa. Shiguang has established long-term partnerships with our customers.
Commitment to Quality
At Shiguang, we adhere to the principle of "quality first, service best". Our comprehensive Quality Assurance System ensures that we provide high-quality chemicals consistently.
SOP Logistics Management
Shiguang implements a Standard Operating Procedure (SOP) system to guarantee efficient and reliable logistics, ensuring timely delivery and quality maintenance.
Trust and Integrity
Shiguang builds mutual trust with our global customers through honesty and integrity, promoting a commitment to excellence in all our interactions.
24/7 Customer Support
Our dedicated team is available 24/7 to provide quick and clear responses to inquiries, ensuring that our customers receive professional and personalized after-sales service for maximum satisfaction.

By choosing Shiguang for your phosphoric acid needs, you benefit from a strong commitment to quality and customer service.

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