| 516 / | HD | COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF |
| DIG 1 | DD | WETTING, EMULSIFYING, DISPERSING, OR STABILIZING AGENTS (252/351) {4} |
| DIG 3 | | .~ Organic sulfoxy compound containing (252/353) {2} |
| DIG 4 | DD | .~.~> Protein or carboxylic compound containing (252/354) |
| DIG 5 | DD | .~.~> Organic amine, amide, or N-base containing (252/355) |