Workwear
Clothing that meets industrial soils. The temptation is to use the same solvent that cleaned the part — and a dryer makes that a fire warning.
Precautions
- Check the manufacturer's instructions
- Ventilate the area
- Dispose of responsibly
Start here
What this is, what tends to go wrong with it, and what to do about it.
What tends to go wrong
Not simply an oil. Used engine oil carries combustion soot and metal particles, which is why it marks darker and behaves worse than the oil that went in.
Why it is difficult: Why oil resists water, Penetration into fibres, Why old stains are harder
Fats and oils, which water alone cannot lift. Removed by surfactants, by heat, by solvents, or by alkalis that convert the fat into soap.
Why it is difficult: Why oil resists water, Emulsification
The stain where the trade guidance switches from water to solvent — and the switch brings a warning the water route does not have.
Why it is difficult: Why oil resists water, Penetration into fibres, Why old stains are harder
Carbon particles from incomplete combustion. Largely inert, so it is lifted dry rather than dissolved — and disturbing it dry is itself an exposure.
Why it is difficult: Mechanical action and abrasion, Why soot is tenacious, Adhesion and cohesion, Why there is a dark line along the skirting board, The risk sits with the cleaner
- Perspirationvia its material
Sweat itself has almost no smell. What you can smell is bacteria eating it — and which bacteria depends on what the garment is made of.
Why it is difficult: Classifying a stain by its origin
- Mildewvia its material
The flat, powdery surface growth that appears on damp fabric, grout and shower curtains — and the carpet trade's procedure for it names no bleach at all.
Why it is difficult: Moisture control and recurrence, Porous and non-porous surfaces, Organic load
- Cellulolytic microorganismsvia its material
The fungi and bacteria that digest cotton, linen and paper by converting the fibre itself into sugar. The damage is not staining, it is the material being eaten.
Why it is difficult: Organic load, Enzymes in cleaning
- Mould fungivia its material
The organisms behind the marking. Around 1.5 million species, each with its own conditions — and killing them does not end the exposure they created.
Why it is difficult: Organic load, Moisture control and recurrence, Biofilm
- Emulsion paint· no established method
A polymer that dried into the fibre — and the trade sequence for it is entirely aqueous, with no solvent step at all.
Two stains in one bottle: an oily film, and a UV filter that forms a coloured complex with the iron in your water. The second one is why the mark comes out orange.
Why it is difficult: Chelation, Water hardness
Two different marks from one product. The white transfer is the product itself. The yellow one is a slow accumulation that has been oxidising in the fabric for months.
Why it is difficult: Insoluble metal soaps
Carotenoid pigment in an acidic, oily sauce. The pigment is fat-soluble, which is why washing in water sets what looks like an easy stain.
Why it is difficult: Fat-soluble pigments, Protein denaturation, Heat-set stains, Pigment retention
Coloured by turmeric in most prepared mustards, and curcumin is a pH indicator — which is why an alkaline cleaner turns a yellow mark red.
Why it is difficult: pH indicators in stains, Fat-soluble pigments, Photodegradation, Pigment retention
Anthocyanin pigment plus sugar and acid. The sugar is the part that turns an invisible dry mark into a brown one months later.
Why it is difficult: pH indicators in stains, Classifying a stain by its origin, Pigment retention, Why old stains are harder
Designed to bond permanently to a protein fibre and developed with an oxidiser. On a surface that is also protein, that design is the problem.
Why it is difficult: Oxidation and bleaching, Dye migration and colour bleeding
An emulsion of oil, pigment and often silicone, formulated to stay put on skin. Two of those three need different treatments, in the right order.
Why it is difficult: Emulsification, Solubility and polarity
The science behind this: Adsorption of odour molecules, Fibre swelling and shrinkage, Oxidation and bleaching, Penetration into fibres, Why plant fibres turn brown when they dry slowly, How care labels work
In detail
Workwear collects engine oil, cutting fluid, grease, paint, soot and metal particles, which are the soils an aqueous laundry process is least equipped for. Two mistakes are common, and each is well documented. The first is treating the garment with whatever cleaned the component. Petroleum solvents attack plastic, rubber and coatings, which can include plastic and coated trims on the garment; and a solvent-treated garment then goes into a machine with everything else. The second is more serious, and the tumble dryer manual states it as a fire hazard rather than as a care note: do not dry articles that have been cleaned or treated with combustible substances, naming cleaners and some spot removers. A workable approach follows from that: remove solids dry first, treat the oily fraction with a detergent containing a lipase rather than with a bulk solvent, and air dry anything that has been near a solvent.
Related
- Workwear is made from Cotton
- Workwear is made from Polyester
- Workwear is commonly affected by Engine oil
- Workwear is commonly affected by Grease
- Workwear is commonly affected by Oil and grease on textile
- Workwear is commonly affected by Soot
- Workwear is commonly affected by Emulsion paint
Sources for this page
Sources
Owner's Manual: Dryers DDE5207M, DDG5287M
GE Appliances · Manufacturer documentation
Relied on for: That articles cleaned or treated with combustible substances, including cleaners and some spot removers, must not be dried in a tumble dryer, and that the instruction is printed under a fire-hazard heading. (states this directly)
Right to Know Hazardous Substance Fact Sheet: Stoddard Solvent (RTK 1736)
New Jersey Department of Health, 2008 · Government or regulator
Relied on for: That Stoddard solvent is combustible, is used for degreasing, and attacks plastic, rubber and coatings. (states this directly)
Chemistry World, Royal Society of Chemistry · Credible secondary source
Relied on for: That lipases act on fatty stains in a laundry formulation. (states this directly)