Typically, sulfur was either not used in brown powders, or sulfur content reduced to around 1% by weight from the usual 10%.
tˈɪpɪkli, sˈʌlfɜː wʌz ˈiːðɚ nˌɑːt jˈuːzd ɪn bɹˈaʊn pˈaʊdɚz, ɔːɹ sˈʌlfɜː kˈɑːntɛnt ɹᵻdˈuːst tʊ ɚɹˈaʊnd wˈʌn pɚsˈɛnt baɪ wˈeɪt fɹʌmðə jˈuːʒuːəl tˈɛn pɚsˈɛnt.