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Description and features
Phostacon MK 1500 (Poly4,4-isopropylidenediphenol C12-C15 Alcohol Phosphite) is clear liquid which has R=C12-15H25-31 as chemical formula. It is used to improve the color, light stability and clarity of PVC and vinyl chloride copolymers. Improved performance is found when MK 1500 phosphite is used in conjunction with primary metal stabilizers and epoxy stabilizers.

It also known Phosphorous acid, (1-methylethylidene)di-4,1-phenylene.

Product information

CAS number96152-48-6
EC number 306-120-2
HS code2920 90 85
SensitivityNot hygroscopic

Molecular weight and formula

Molecular formulaR=C12-15H25-31
Molecular weight1.112 g/mol
Smiles notation
Structural formula:96152-48-6


AppearanceClear liquid
Acid Value≤0.30 (mg KOH/gm)
Colour (APHA)≤50

Physicochemical information

Boiling point
Flash point
Melting point
Partition coefficient (log Pow)
Refractive index
Solubility in waterInsoluble
Specific gravity
Vapour pressure

Available packaging: 200KG steel drums and 1.000kg IBC.
Special packaging is available on request.

Shipment Info
Europe and United States: Provided Phostacon MK1500 is on stock in our local warehouses our lead time is about one week if delivered in 200 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Store Poly 4,4-isopropylidenediphenol C12-C15 Alcohol Phosphite in a cool, dry and well-ventilated area and in line with legal requirements.
Keep MK1500 away from heat sources and oxidizing agents.

This substance (CAS: 96152-48-6) has been pre-registered under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for Phostacon MK1500 and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Poly 4,4-isopropylidenediphenol C12-C15 Alcohol Phosphite : Disclaimer. This information is supplied solely for informational purposes and Vesta Intracon bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.