---
title: ZRC-221® Low VOC Galvanizing Compound | 40% Lower Emissions
description: Reduce emissions 40% with ZRC-221 Low VOC formula. Maintains 95% zinc content and ASTM A780 performance. Ideal for restricted areas. Shop galvanizing compound.
---
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- [ZRC Galvilite](https://www.zrcworldwide.com/products/zrc-galvilite)
- [ZRC® 221 Cold Galvanizing Compound](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound)
- [ZRC® Zero-VOC Galvanizing Compound](https://www.zrcworldwide.com/products/zrc-zero-voc-galvanizing-compound)
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- [FAQ](https://www.zrcworldwide.com/faq)
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**
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**
# ZRC® Low VOC Cold Galvanizing Compound
The newest innovation in zinc-rich technology, ZRC® Low VOC Cold Galvanizing Compound offers the same superior performance with 40% lower levels of volatile organic compounds — a more environmentally friendly protection option.
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## At-A-Glance: ZRC 221 Cold Galvanizing Compound
### As the lowest VOC zinc-rich compound available, ZRC Low VOC Cold Galvanizing Compound offers the same protection as the original ZRC® Cold Galvanizing Compound with 40% fewer volatile organic compounds.
[ Use Cases ](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound#uses) [ Application Formats ](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound#applications) [ Product Documentation ](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound#docs) [ Product Specs ](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound#specs)
Recommended Uses
ZRC is widely used without topcoats in place of hot-dip galvanizing and is deployed as a high-performance base coat with a variety of topcoats. Used for:
Hot-Dip Galvanizing Repair & Regalvanizing A more accessible option for repair of worn hot-dip galvanized materials.
Weldments Repair Our original compound can be used to repair weldments.
Long-Term Protection It’s proven to be effective long-term protection for: structural steel, water and waste facilities, power plants, transmission towers and antennae, steel decking and bridges, and numerous OEM uses.
Inorganic Zinc Coatings Repair ZRC is also effective for inorganic zinc coatings repair.
Galvalume® and Zinc Metallizing ZRC 221 can be used for Galvalume® and zinc metalizing projects.
#### Flexible Application Formats
Unlike hot-dip galvanizing, ZRC Low VOC is portable, flexible protection that can be applied in a variety of formats.
Brush and Roller
### Brush and Roller
Apply as received in the container. For brush application, we recommend only 100% Natural Chinese Bristle brushes. For roller application, we recommend rollers with a 3/8” nap, made of mohair or lambs wool (sheepskin).
Spray (Low Pressure Compressor)
### Spray (Low Pressure Compressor)
ZRC can also be applied as a spray. Notes:
- Atomized Air Pressure: 50 psi (1.3 kg/cm²)
- Fluid Pressure: 15 to 20 psi (0.4-0.6 kg/cm²)
- Orifice of Tip: 0.080 inches (0.20 cm)
- Viscosity Reduction: 5:1 ZRC-221 : parachloro-triflouromethyl-benzene (vol)
Spray (Airless)
### Spray (Airless)
Recommended Procedure: Connect hose directly to pump ensuring a hose length of 50 ft. max. Use the least pressure possible. Start at 1500 lbs. (680 kg) and increase as required for good spraying. Notes:
- Pump: 30:1 Ratio
- Hose: 1/2" (1.3 cm)(I.D.) Airless Type
- Orifice of Tip: 60° - .026 in. (0.07 cm)
- Type of Tip: Tungsten carbide, reversing
- Filter Screens: Complete removal is recommended. However, if screens are employed, use no less than 30 mesh.
- Viscosity: No reduction required
### Brush and Roller
Apply as received in the container. For brush application, we recommend only 100% Natural Chinese Bristle brushes. For roller application, we recommend rollers with a 3/8” nap, made of mohair or lambs wool (sheepskin).
### Spray (Low Pressure Compressor)
ZRC can also be applied as a spray. Notes:
- Atomized Air Pressure: 50 psi (1.3 kg/cm²)
- Fluid Pressure: 15 to 20 psi (0.4-0.6 kg/cm²)
- Orifice of Tip: 0.080 inches (0.20 cm)
- Viscosity Reduction: 5:1 ZRC-221 : parachloro-triflouromethyl-benzene (vol)
### Spray (Airless)
Recommended Procedure: Connect hose directly to pump ensuring a hose length of 50 ft. max. Use the least pressure possible. Start at 1500 lbs. (680 kg) and increase as required for good spraying. Notes:
- Pump: 30:1 Ratio
- Hose: 1/2" (1.3 cm)(I.D.) Airless Type
- Orifice of Tip: 60° - .026 in. (0.07 cm)
- Type of Tip: Tungsten carbide, reversing
- Filter Screens: Complete removal is recommended. However, if screens are employed, use no less than 30 mesh.
- Viscosity: No reduction required
## Specifications: ZRC Cold Galvanizing Compound
Here are the details for our industry-leading product:
###### Specifications
** **
SSPC Paint Specification 20 – Zinc-Rich Coating: Type II – Organic; Level 1 – equal to or greater than 92% zinc dust by weight present in the dried film
---
###### Zinc Dust Content
** **
Zinc Dust Content - ASTM D 520 Type III Zinc Dust — .002% maximum lead by weight
---
###### Weight and VOC Notes
** **
Weight per gallon — not less than 26 lbs.
VOC Content — ASTM D 3960, 221 g/l (1.8 lbs per gallon) maximum
---
###### Color and Gloss
** **
Color and Gloss – Matte finish, “battleship grey”
---
###### Manufacturers
** **
Manufacturers: Subject to compliance with requirements, provide galvanizing compound by one of the following:
1. ZRC Cold Galvanizing Compound, ZRC Worldwide
(www.zrcworldwide.com, (800 831-3275 ))
1. No known equal.
Follow manufacturer’s application instructions
Manufacturer to provide Certificate of Conformance to above criteria.
---
###### Part Numbers
** **
50003 - ZRC 221 Low VOC Cold Galvanizing Compound Gallon
---
[
User Guide
### Guide to Surface Preparation for ZRC
Guide to preparing metal surfaces for proper application of ZRC
Download Now
](https://www.zrcworldwide.com/hubfs/2025%20guides/Facelift%20ZRC%20Summaries%20of%20Surface%20Preparation%20Guide%20RD2.pdf?hsLang=en)
[
User Guide
### Guide to Topcoating over ZRC
Instructions on how to properly topcoat over ZRC
Download Now
](https://www.zrcworldwide.com/hubfs/2025%20guides/GUIDE%20-%20Topcoating%20Over%20ZRC%201.pdf?hsLang=en)
[
User Guide
### Guide to Dipping Application of ZRC
Guide to applying ZRC by dipping method
Download Now
](https://www.zrcworldwide.com/hubfs/2025%20guides/ZRC%20Dipping%20Guide.pdf?hsLang=en)
[View All Resources](https://www.zrcworldwide.com/resources?hsLang=en)
## Quotes from Our Customers
It’s no secret we’re the industry-leading solution that lasts. Here’s what our
customers have to say.
Because of my experience in the field with this product, I always recommend ZRC in corrosive applications. I've used ZRC to regalvanize radar towers and catwalk gratings for the Navy at the base in Winter Harbor, Maine. I also used it on metal roofs and on salt water cookers at a canning company. In all cases, it has provided five years or more of rust-free protection.
Roy Love | President, Loves Painting
DAI needed a coating that was equivalent to hot-dip galvanizing since many major components are too big to fit in the galvanizing tanks," "ZRC provides the equivalent corrosion protection of ASTM A 123 galvanizing and is applied directly over sandblasted A 36 steel prior to top coating with chlorinated rubber or epoxy.
Sandy Boog-Scott | Director of Materials, DAI
Of all the painting systems I have used to protect ironwork in the past ten years, ZRC top coated with epoxy works the best — even in highly corrosive, humid environments.
Doug McLean | President, McLean's Blacksmithing, Inc., Galveston TX
##### Go With The Experts
Imitation is flattering, but the proof is in the paint. ZRC Worldwide created zinc coating technology to combat corrosion and has been a worldwide leader in the space for 70 years.
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ZRC Worldwide
145 Enterprise Drive
Marshfield, MA 02050 USA
Phone: [(781) 319-0400](tel:+7813190400)
Toll-Free: [(800) 831-3275](tel:+8008313275) (US Only)
Fax: [(781) 319-0404](tel:+7813190404)
Email: [info@zrcworldwide.com](mailto:info@zrcworldwide.com)
- Products
- [ZRC® Cold Galvanizing Compound](https://www.zrcworldwide.com/products/zrc-cold-galvanizing-compound)
- [ZRC Galvilite](https://www.zrcworldwide.com/products/zrc-galvilite)
- [ZRC® 221 Cold Galvanizing Compound](https://www.zrcworldwide.com/products/zrc-221-cold-galvanizing-compound)
- [ZRC® Zero-VOC Galvanizing Compound](https://www.zrcworldwide.com/products/zrc-zero-voc-galvanizing-compound)
- [Product Finder Tool **](https://www.zrcworldwide.com/find-a-product)
- [Dealer Locator](https://www.zrcworldwide.com/dealer-locator)
- How It Works
- [FAQ](https://www.zrcworldwide.com/faq)
- [Technical Overview](https://www.zrcworldwide.com/technical-data)
- [Functional Applications](https://www.zrcworldwide.com/functional-applications)
- [Photo Gallery](https://www.zrcworldwide.com/photo-gallery)
- Resources
- [Resource Center](https://www.zrcworldwide.com/resources)
- [User Guides](https://www.zrcworldwide.com/resources#user-guide)
- [Fact Sheets](https://www.zrcworldwide.com/resources#product-data-sheet)
- [Product Specifications](https://www.zrcworldwide.com/resources#product-specifications)
- [Case Studies](https://www.zrcworldwide.com/resources#case-study)
- Why ZRC
- [About Us](https://www.zrcworldwide.com/about-us)
- [Contact Us](https://www.zrcworldwide.com/contact-us)
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