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  • Phosphoric Acid CAS#7664-38-2
  • Phosphoric Acid CAS#7664-38-2
  • Phosphoric Acid CAS#7664-38-2
  • Phosphoric Acid CAS#7664-38-2
  • Phosphoric Acid CAS#7664-38-2

›

Phosphoric Acid CAS#7664-38-2

Phosphoric Acid CAS#7664-38-2

Basic Information

High Purity and Strong Acidity Control: Phosphoric acid is a medium-strong inorganic acid with stable and controllable acidity, making it suitable for precise pH adjustment and chemical reactions across multiple industries.


Excellent Solubility and Compatibility: It is easily soluble in water and ethanol and can react with various bases to form different phosphate salts, offering high versatility in industrial and chemical applications.


Stable Physical and Chemical Properties: With a high boiling point, good thermal stability, and strong hydrogen bonding, phosphoric acid maintains consistent performance under diverse processing conditions.


Wide Industrial Applicability: Due to its reliable reactivity and physicochemical properties, phosphoric acid is widely used in chemical manufacturing, fertilizers, food processing, metallurgy, and surface treatment processes.


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product description

Product Description of ‌Phosphoric Acid CAS#7664-38-2

Phosphoric acid is a medium-strength inorganic acid. Pure form: colorless liquid/crystal (mp 42.35 °C, density 1.834), miscible with water/ethanol. 85% solution: pale yellow viscous liquid (density 1.70). Dehydrates to pyrophosphoric acid at 213 °C and metaphosphoric acid at 300 °C. Hygroscopic, skin-irritating; commercial grade is ~82% solution.


Product Application of Phosphoric Acid CAS#7664-38-2

Wet-process phosphoric acid produces various phosphates; purified grade makes feed calcium hydrogen phosphate. Used in metal phosphating, aluminum polishing, pharmaceuticals (glycerophosphate, iron phosphate, dental zinc phosphate), phenolic resin catalysis, dye drying, printing plate cleaning, match impregnation, refractory mortars, rubber coagulation, adhesives and anti-corrosion coatings.

Product Information

Parameters


Melting point

~40 °C(lit.)

Boiling point

158 °C(lit.)

density

1.685 g/mL at 25 °C(lit.)

vapor density

3.4 (vs air)

vapor pressure

2.2 mm Hg ( 20 °C)

refractive index

n20/D 1.433

FEMA

2900 | PHOSPHORIC ACID

storage temp.

no restrictions.

solubility

H2O: soluble

pka

2.1-7.2-12.3(at 25℃)

form

Solid or Viscous Liquid

Specific Gravity

1.7

color

≤10(APHA)

PH

3.06(1 mM solution);2.26(10 mM solution);1.63(100 mM solution);

Odor

Odorless

PH Range

1.5

Water Solubility

MISCIBLE

λmax

λ: 260 nm Amax: ≤0.05λ: 280 nm Amax: ≤0.04

Merck

14,7344

BRN

1921286

Exposure limits

TLV-TWA 1 mg/m3 (ACGIH, MSHA, and OSHA); TLV-STEL 3 mg/m3 (ACGIH).

Dielectric constant

61.0

InChIKey

NBIIXXVUZAFLBC-UHFFFAOYSA-N

LogP

-2.15

CAS DataBase Reference

7664-38-2(CAS DataBase Reference)

NIST Chemistry Reference

Phosphoric acid(7664-38-2)

EPA Substance Registry System

Phosphoric acid (7664-38-2)


Safety Information


Hazard Codes

C,Xn,T,F

Risk Statements

34-35-22-39/23/24/25-36/38-23/24/25-11

Safety Statements

7-16-26-36/37-45-36/37/39-1/2-24/25

RIDADR

UN 3453 8/PG 3

WGK Germany

3

RTECS

TB6300000

F

3-10

TSCA

Yes

HS Code

2809 20 00

HazardClass

8

PackingGroup

III

Hazardous Substances Data

7664-38-2(Hazardous Substances Data)

IDLA

1,000 mg/m3


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