Sakrete™ Mortar Mix, Type N, 60 lb, Bag, Gray, 40 to 90 deg F, 50 sq-ft Yield, Composition: 30 to 85% Quartz, 5 to 55% Cement/Portland/Chemical, 1 to 5% Calcium Magnesium Hydroxide, 1 to 5% Calcium Magnesium Hydroxide Oxide, 0.5 to 2% Calcium Oxide, 0.5 to 5% Calcium Hydroxide, 0.5 to 5% Calcium Sulfate, 0.5 to 17% Limestone, 1 to 5% Cement/Alumina/Chemical, 10 to 12 pH. Type N Mortar Mix is a preblended mixture of sand and masonry cement or sand, lime and portland cement. For laying brick, block and stone in load bearing walls. Build walls, planters, and chimneys. For tuck pointing or repairing existing mortar joints. Can also be used for scratch and brown coat in stucco applications. Meets property requirements of ASTM C270 and C1714.