The phrase "as its primary purpose" is correct and usable in written English.
You can use it to specify the main function or intention of something in a clear and concise manner.
Example: "The software was designed as its primary purpose to enhance user productivity and streamline workflows."
Alternatives: "as its main objective" or "as its chief aim".
For purposes of section 213 and this paragraph, a capital expenditure made by the taxpayer may qualify as a medical expense, if it has as its primary purpose the medical care (as defined in subdivisions (i) and (ii) of this subparagraph) of the taxpayer, his spouse, or his dependent.
The government says Respectful Relationships "is about tackling family violence" – it is stated as its primary purpose.
This stated "a person wearing a garment or other object intended by the wearer as its primary purpose to obscure the face in a public place shall be guilty of an offence".
The plan has as its primary purpose the expansion of home ownership in, and the revitalization of, the asset control area, established pursuant to paragraph (4)(B)(i) by the purchaser, in which the eligible asset is located.
The testimony, under oath, by one current & 4 former city employees, dealt with the operations of the Talent Bank, which the Mayor set up in April , 1983 giving as its primary purpose the providing of more city-employment opportunities for blacks, Hispanics & women.
The pyloric sphincter has as its primary purpose the retention of food in the stomach until the digestive action that takes place there is complete, but it also tends to trip and close at the repeated touch of any irritating substance.
Clinical supervision has patient-safety and the quality of patient care as its primary purposes.
A few delegates in Phoenix argued that the church should remain color-blind as it pursues its primary purpose of spreading the Gospel, but nearly all the more than 2,000 voting delegates supported the diversity plan.
Even before the show began, it was being discussed as though its primary purpose were to pave the way for a woman to be President, sooner rather than later; in fact, it's reality that paved the way for "Commander in Chief".
Cast entirely in terms of celebrity culture and its discontents, every act of Salinger's is weighed as though its primary purpose was to push or somehow extend his "reputation" — careerism is simply assumed as the only motive a writer might have.
The EU can no longer continue to act as if its primary purpose were to consume goods and service elsewhere in the world because the essential relationship between 'the west' and the rest of the world has been fundamentally altered, to the detriment of 'the west'.
