Question 979 Deck General

The correct answer is A) Reid vapor pressure of 5 psia, flash point of 70°F. According to the regulations for the classification of petroleum products, a "Grade C" product is defined as having a Reid vapor pressure above 4 psia but less than 14 psia, and a flash point above 60°F. The product described in option A, with a Reid vapor pressure of 5 psia and a flash point of 70°F, falls within this classification. The other options are incorrect because: B) and D) describe products with higher Reid vapor pressures, which would be classified as higher grade products. C) describes a product with a Reid vapor pressure above 8 1/2 psia, which is outside the range for a "Grade C" product.