はつがんガン せい物質 ぶっしつじゃなかったです
hatsuganseibusshitsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 発ガン性物質

1. Wasn't carcinogenic.; Wasn't a carcinogen.

Past/Perfective
Negative
Polite
Casual Register