Alum is on of the most commonly used mordants. It will improve wash- and light fastness on any fabric.
Alum is called 'the sunny mordant' because it tends to brighten and deepen the colours. It will make yellows bright yellow and is a must for bright reds when dyeing with madder.
Recommended WOF 15-20% on protein fibres.
For mordanting cellulose fibers it is better to use Aluminium Acetate.
It is recommended to have a look at the mordantting and scouring module available here.
Odourless white granules that dissolve easily in hot water.
Potassium Aluminium Sulfate has no harmfull effects to the environment, pets or humans in small dosages.
Weight; 50 grams (1.75 ounce)
-Securely packed in a re-sealable zip bag for easy use and storage
Alum (potassium aluminium sulfate)
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Maintain a constant temperature not to exceed 24° C. (75° F.). Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Heath and Safety
Do not ingest. Do not breathe dust. Wear protective gloves, safety goggles and a dust mask when handling fine dye powders and mordants.
WARNING! HARMFUL IF SWALLOWED OR INHALED.
Natural dye powders are no environmental concern. Mordants and mordanted dye baths should be disposed in a sensible way according to your local waste disposal laws.
TOXICOLOGICAL INFORMA TION: HEALTH HAZARDS, GENERAL: INGESTION:
Low order of acute toxicity. LD 50 - 30g/oral (human) May cause irritation to eyes, skin, and mucous membranes. Ingestion will cause gastric irritation and vomiting. Astringent property may cause tightning of the skin.
May cause irritation to eyes.
12. ECOLOGICAL INFORMATION:
ECOLOGICAL INFORMATION: No specific data or information available regarding environmental impact. Discharge to aquatic environments should be avoided as it may lead to localised adverse effects. (due
to pH shift of solution).
13. DISPOSAL CONSIDERATIONS:
DISPOSAL METHODS: Via authorised/licenced waste disposal contractor to an approved waste disposal site, observing all local and national regulations.