Vinylphosphonic acid manufacturers and suppliers

Vinylphosphonic acid suppliers

Properties

Melting point:: 41-45 °C(lit.)

Boiling point:: 97-98 °C(Press: 2 Torr)

Density: 1.389 g/mL at 25 °C(lit.)

vapor pressure: 0Pa at 20℃

refractive index: n20/D 1.473

Flash point:: >230 °F

storage temp.: Sealed in dry,Room Temperature

solubility: Soluble in water

pka: 2.11±0.10(Predicted)

form: liquid

color: colorless to pale-yellow

PH: 1.5 (50g/l, H2O, 30℃)

Water Solubility: 100g/L at 20℃

BRN: 1741622

LogP: -1.69 at 20℃

Safety Information

Symbol(GHS): GHS05

Signal word: Danger

Hazard statements: H290-H314

Precautionary statements: P280-P301+P330+P331-P303+P361+P353-P305+P351+P338

Hazard Codes: C

Risk Statements: 34-35-22

Safety Statements: 26-36/37/39-45

RIDADR: UN 3261 8/PG 2

WGK Germany: 1

RTECS: SZ7903500

HazardClass: 8

PackingGroup: III

HS Code: 2931499090

Use

This fireproofing agent, and ingredient for making polymers, is obtained as a syrup on hydrolyzing vinylphosphonyl dichloride with cold H2O and solidifies on prolonged drying over P2O5/KOH. When distilled at 235-240o/0.0006mm, it gives the anhydride (d 1.304, n 1.5874) [Kabachnik & Medvedi Izvest Akad Nauk SSSR, Ser Khim 868 1953, Chem Abstr 54 10834 1960]. It is best kept as the sodium salt (m 350o) which precipitates when a solution of EtOH containing NaOEt (from 2g of Na) is added to vinylphosphonic acid (3.2g), and is recrystallised from EtOH (5.1g, quantitative). The p-anisidinium salt forms mauve prisms m 250o (from EtOH/Et2O). The dimethyl ester, M 136.1, d4 1.1405, nD 1.4330, has b 72.5o/10mm and 197-202o/760mm. [Kabachnik et al. J Gen Chem USSR (Engl Trans) 33 375 1963, Beilstein 4 IV 3568.]

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