Product and application illustrations. Follow the product label and written use guidance.
CleenU product solution
Stone Rust Stain Remover
pH-neutral rust remover · Turns purple as it works · Private label
A yellow-brown rust ring on light limestone where an iron planter sat? Spray it; within 5–15 minutes the liquid turns purple as it dissolves the rust. Rinse and repeat for heavy stains—the ring disappears with no etching. Private label from 500 bottles.
- Oxalic and hydrochloric rust removers are fast, but marble, limestone, terrazzo, and calcareous sandstone are mostly calcium carbonate that fizzes and etches in acid. The rust goes, and a dull, rough etch mark harder to fix than the rust is left behind. Stone needs rust chemistry that leaves calcium carbonate alone.
- The active, a thioglycolate, binds iron at neutral pH into a soluble purple-red complex. Within minutes the liquid turns purple, a sign the rust is being pulled out; when the color stops deepening, rinse and the rust goes with the water. Deep stains get lighter with each repeat.
- MOQ
- 500 bottles
- Free samples
- 3–5 days
- Bulk lead time
- Scheduled with the order
Product value
What does Stone Rust Stain Remover clean?
Stone Rust Stain Remover removes rust stains from natural stone, concrete, tile, pavers, and stone facades.
View product detailsProduct summary
- Product type
- PH-neutral thioglycolate stone rust remover
- Intended use
- Rust stains and rusty streaks on natural stone, concrete, tile, and pavers
- Formula
- Thioglycolate with thickener and wetting agent, pH 6.5–8.0; no strong acids; ready to use.
- For
- Stone care brands, home improvement channels, stone restoration and property firms, ecommerce sellers
Before & after
Before and after (use illustration)
Before: a light limestone patio carries a yellow-brown rust ring from an iron planter. After: sprayed, purple within 10 minutes, rinsed, and repeated once, the ring is gone with no etching.
- Before: a yellow-brown rust ring on light limestone
- After: the ring is gone with no etching or dulling
- It turns purple as it works—then just rinse
How it works
How Rust Dissolves at Neutral pH
Rust is mainly ferric oxides and hydroxides. The thiol group in thioglycolate reduces ferric to ferrous iron and forms a stable, soluble, purple-red complex, so the rust dissolves out of the pores. The reaction runs near neutral, releasing no acid to attack calcium carbonate, so marble and limestone aren’t etched. Rinsing carries the complex away.
- Thioglycolate reduces ferric iron
- Forms a soluble purple complex
- Leaves the pores
- Rinsed away
Usage guidance
Use guidance
- Test a hidden spot and dampen around the stain.
- Spray the rust; within 5 to 15 minutes it turns purple. Keep it wet.
- When the color stops deepening, rinse; repeat once or twice on heavy rust.
Before you use it
Important notes
- Not for: Metal fittings and aluminum
- Not for: Car paint
- Not for: Mixing with acids or bleach
- Not for: Oil and mold stains
- Not for: Enclosed, unventilated spaces
Product comparison
How to choose a Stone Rust Stain Remover
Rust on stone: Stone Rust Stain Remover. Oil in stone: Stone Oil Stain Remover. Grey, dark stone overall: Outdoor Stone Cleaner & Restorer.
View product comparison
| Decision point | Stone Rust Stain Remover | Oxalic or hydrochloric rust remover |
|---|---|---|
| On marble and limestone | Neutral, no etching | Etches and dulls |
| Visible reaction | Turns purple | None |
| Rust removal | Dissolved and rinsed | Dissolved and rinsed |
| Risk | Odor, needs ventilation | Highly corrosive |
Where Stone Rust Stain Remover stands out
Strong Acids Dissolve the Stone Along With the Rust
Oxalic and hydrochloric rust removers are fast, but marble, limestone, terrazzo, and calcareous sandstone are mostly calcium carbonate that fizzes and etches in acid. The rust goes, and a dull, rough etch mark harder to fix than the rust is left behind. Stone needs rust chemistry that leaves calcium carbonate alone.
Purple Means the Rust Is Dissolving
The active, a thioglycolate, binds iron at neutral pH into a soluble purple-red complex. Within minutes the liquid turns purple, a sign the rust is being pulled out; when the color stops deepening, rinse and the rust goes with the water. Deep stains get lighter with each repeat.
Who it's for, where it's used, and when not to use it
For
End-use scenarios
When not to use it
Product Specifications and Custom Options
Key product details and custom options for your project.
Product specifications
Product type, cleaning scope, and format.
| Product type | PH-neutral thioglycolate stone rust remover |
| Surfaces | Natural stone, concrete, tile, pavers, and stone facades |
| Use scenarios | Planter and furniture rust; Irrigation rust streaks; Stone care and property |
| Target soils | Rust stains and rusty streaks on natural stone, concrete, tile, and pavers |
| Directions | Ready to use, no dilution; 5–15 min until it turns purple, then rinse; repeat on heavy rust |
| Not for | Metal fittings and aluminum; Car paint; Mixing with acids or bleach; Oil and mold stains; Enclosed, unventilated spaces |
| Size and packaging | 500 mL trigger spray bottle |
| pH | pH 6.5–8.0 at 25°C |
| Scent | Unscented |
| Shelf life and storage | 24 months unopened; keep tightly closed in a cool, dry, well-ventilated place. Protect from heat, direct sunlight, and freezing |
B2B custom options
Private label, packaging, MOQ, samples, and delivery.
| OEM/ODM and private label | From product direction and sample review to packaging, production, and delivery for your Stone Rust Stain Remover project. |
| Packaging and labels | Mist trigger / foam trigger, fill size, labels, and retail sets can be customized |
| Case pack | 12 × 500 mL per case |
| MOQ | 500 bottles |
| Sample time | Free sample: 3–5 days |
| Bulk lead time | Scheduled with the order after packaging and label approval |
| Documents | SDS/MSDS, TDS, and batch COA provided per project on inquiry |
OEM/ODM project process
Move from product direction and sample review to packaging, production, and delivery for Stone Rust Stain Remover.
Define format and channel
Choose gel or liquid and the channel.
Free sample
A free sample is usually ready in 3–5 days for project review.
Packaging and labels
Set fill size, trigger type, label language, the warnings your market requires, and ventilate, keep-off-metal, and no-acid-or-bleach instructions.
Bulk delivery
Standard MOQ is 500 bottles; bulk orders are scheduled after packaging and labels are approved.
Why choose CleenU for Stone Rust Stain Remover?
From product positioning and samples to packaging and repeat supply, CleenU supports OEM/ODM projects built around Stone Rust Stain Remover.
Rust removal balanced with odor
Active level sets speed and odor strength.
Spray or gel
Spray for floors; gel clings to vertical streaks.
Sample reviews with clear criteria
Review samples on your rust-stained marble, limestone, and concrete samples against clear points: rust removal, effect on marble gloss, and color reaction.
Unscented
No fragrance; odor-masked versions possible.
Labels and documents
We supply bilingual labels, SDS/MSDS, TDS, and batch COAs, with ventilate, keep-off-metal, and no-acid-or-bleach instructions on the label, and can arrange third-party testing for your market.
Consistent supply and reorders
Each batch is retained and ships with a COA, so reorders match in color, scent, and feel.
Packaging and labeling options
Plan packaging format, label language, and shelf presentation around Stone Rust Stain Remover and your target channel.
Show packaging and label options
Packaging options
Core size: 500 mL trigger spray bottle. Also available: 1 L household refill, channel case packs, and ecommerce bundles with the stone oil stain remover. Mist trigger or foam trigger options, with labels and cartons made to your brand.
Supporting Documents and Materials
Purchasers usually confirm whether the materials are complete before formal cooperation. Preparing documents in advance helps with quoting, sampling, and channel review.
Show available documents
Project documents
When you inquire, we provide SDS/MSDS, a TDS, batch COAs, label directions, and packaging files for your project.
Related products, solutions, and articles
Explore related cleaning products, application guidance, and OEM/ODM resources for Stone Rust Stain Remover.
Frequently asked questions (FAQ)
Find practical answers about Stone Rust Stain Remover, private label, samples, MOQ, documents, and delivery.
How to use
Can it remove rust from marble?
Yes. It’s neutral and won’t etch marble; spray, let it turn purple, rinse, and repeat on heavy rust.
Why does it turn purple?
The active binds iron into a soluble purple-red complex; the color means rust is dissolving.
Does it smell?
Yes, it has a noticeable odor; ventilate or work outdoors.
Surfaces and common questions
Does it work on tile and concrete?
Yes, on tile, concrete, and pavers too.
Will it affect metal?
It can; keep it off metal, aluminum, and car paint and rinse any splashes.
Can it remove oil too?
No; use the Stone Oil Stain Remover for oil.
Can it handle widespread rust staining from irrigation water?
Yes. Wet the whole area, rinse once it turns purple, and repeat as needed. Iron-rich water will keep staining, so redirect sprinklers or add a filter.
How do I treat rust runs on a vertical stone wall?
Use a gel version or apply it on absorbent paper as a compress so it stays put longer. Apply bottom-up and rinse top-down so runs don’t leave new streaks.
What if it gets on nearby metal railings?
Rinse and dry right away—it reacts with iron surfaces. Cover galvanized parts, aluminum frames, and railings before you start.
Will rust come back after treatment? How do I prevent it?
Once the stain is gone, the stone won't rust on its own; rust returns because the source is still there: iron planters, furniture feet, rusty screws, or iron in irrigation or well water. After treating, move or pad the iron items, aim sprinklers away from the stone, add a filter on iron-rich water, and seal the stone once it's dry so less rust soaks back in.
Can I use it to remove rust from tools, metal, or my car?
No. It's made to lift rust stains out of stone, concrete, and tile, and it reacts with iron surfaces, so keep it off metal parts, aluminum frames, and car paint. For rusty tools, railings, or body panels, use a metal rust remover or rust converter. Use this one when that rust has run onto stone and left an orange-brown stain.
Will vinegar, baking soda, or WD-40 remove rust stains from stone?
Not well, and vinegar can make things worse. It's an acid that etches marble, limestone, and concrete, leaving dull marks while the rust deep in the pores stays put. Baking soda only scrubs the surface, and WD-40 is a lubricant that won't dissolve iron oxide and can leave an oily mark. Use a pH-neutral stone rust remover instead: it turns purple as it pulls the iron out, then you rinse it away.
Buying and private label
What should we decide first for a private-label stone rust stain remover?
Three things: gel or liquid (gel for vertical surfaces), channel (stone care, home improvement, or property), and your market’s labeling rules for thioglycolate products. “Neutral, marble-safe, visibly turns purple” is the pitch.
What are the sample, MOQ, and lead-time terms?
Free samples are usually ready in 3–5 days. Standard MOQ is 500 bottles, and bulk orders are scheduled after packaging and labels are approved.
What can be customized?
All of it: formula direction, scent, fill size (500 mL spray, 1 L refill, and more), mist or foam trigger, label design and language, and ecommerce bundles with the stone oil stain remover.
Can we test samples first?
Yes, we ship samples first. Test them on rust-stained marble, limestone, and concrete samples like the ones your customers handle, and record rust removal, effect on marble gloss, and color reaction. That tells you more than a before-and-after photo.
Which documents can you provide?
We provide SDS/MSDS, a TDS, and batch COAs, plus bilingual label content for your target market. They aren’t posted publicly; we send them per project on inquiry.
How is private-label pricing quoted?
Pricing is tiered by packaging, trigger or cap, label, and order quantity, starting at the 500-bottle MOQ. Send your target quantity, fill size, and packaging needs, and we’ll quote unit prices by volume tier with sample and lead-time details.
Launching your own Stone Rust Stain Remover?
Send us your market, format, channel, and estimated volume. We will work through formula and labeling with you.