MXC-B20

MXC-B20 is a bismuth metal-carboxylate catalyst that can be used as a cocatalyst with tertiary amines to accelerate polyurethane reactions and curing. It is free of mercury, lead and dibutyltin. A low-volatility, low-odor catalyst, it is an alternative to tin-based catalysts in flexible block, high-density flexible foam, spray, microporous and rigid foam systems.

CROSS REFERENCE GUIDE:MB20

Flash Point, °C (PMCC) :158

Viscosity at 25 °C cPs :~5,000

Specific Gravity @ 21 °C (g/cm³) :1.22

Calculated OH Number, mgKOH/g :177

Strong urethane or gelation metal catalyst

Exhibits delayed viscosity build on front-end at low usage levels while promoting excel-lent back-end cure

Free of mercury, lead and dibutyl tin

Low volatility with little or no odor

Compatibility with common rigid and flexible foam polyols

MXC-B20 gel catalyst has utility in the manufacture of rigid, microcellular, and high-density semi-flexible polyurethane foams as an alternative to traditional metal catalysts based on dibutyl tin, lead or mer-cury. In applications where cure times with amine catalysis alone are too long, the ex-tra activity obtained by a synergistic com-bination of metal carboxylates like MXC-B20 catalyst with amine catalysts permits rapid cure with excellent foam performance while avoiding tin. Example applications include high density structural rigid foam, rigid spray wall insu-lation, rigid board stock run at high line speeds, Reaction Injection Molding (RIM), and microcellular integral skin foam.

Flash Point, °C (PMCC) ：158

Viscosity at 25 °C cPs ：~5,000

Specific Gravity @ 21 °C (g/cm³) ：1.22

Calculated OH Number, mgKOH/g ：177

Package:

170kgs net steel drum

GHS classification Not a dangerous substance according to GHS GHS label elements Hazard pictograms/symbols: None. Signal Word: Not applicable. Hazard Statements: Not applicable. Hazards not otherwise classified Keep away from heat and sources of ignition. Mild skin irritant. Mild eye irritant. Mild respiratory tract irritant.

General advice :Seek medical advice. If breathing has stopped or is labored, give assisted respirations. Supplemental oxygen may be indicated. If the heart has stopped, trained personnel should begin cardiopulmonary resuscitation immediately.

Eye contact :Rinse immediately with plenty of water also under the eyelids for at least 20 minutes. Remove contact lenses.

Skin contact :Wash off immediately with plenty of water for at least 20 minutes. Immediately remove contaminated clothing, and any extraneous chemical, if possible to do so without delay. Ingestion :If a person vomits when lying on his back, place him in the recovery position. Prevent aspiration of vomit. Turn victim's head to the side.

Inhalation :If breathing has stopped or is labored, give assisted respirations. Supplemental oxygen may be indicated. If the heart has stopped, trained personnel should begin cardiopulmonary resuscitation immediately. Move to fresh air.

Most important :Repeated and/or prolonged exposure to low concentrations of vapors and/or aerosols symptoms/effects - acute and may cause: Sore throat. delayed

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