HOLD*BLAST Surface Passivator which Stops Flash Rusting

Stops the formation of flash rust prior to coating.

Starting at $197.50

HOLD*BLAST Surface Passivator which Stops Flash Rusting
Grouped product items
Product Name Qty
Chlor*Rid Hold*Blast, Surface Passivator which Stops Flash Rusting, 5-gallon container


HOLD*BLAST is a surface passivator which stops the formation of flash rust for long periods of time, often several days.

Surface corrosion can occur when water wet surfaces react with atmospheric oxygen. The formation of flash rust can be eliminated with the use of HOLD*BLAST, which chemically changes the active surface of metal to a much less reactive state.

HOLD*BLAST is a concentrated, organic chemistry liquid, which is added to water and sprayed onto surfaces during preparation for coating. As a surface passivator, it chemically changes the active surface of metal to a much less reactive state. It does not leave a film or residue to interfere with coating adhesion.

HOLD*BLAST also removes soluble salts as it passivates, and is an effective alternative to hazardous chemical rust inhibitors..

HOLD*BLAST is a cost effective, environmentally safe and coating friendly product. It leaves no chemical residue, is biodegradable, non-hazardous, and is a safe.




5 / 55 US Gallons

Shelf Life

36 months

Application Temperature

35°F - 211°F




Out of direct sunlight. Avoid Freezing.




Slight, pleasant


10.8 ± 0.2

Number of Components

Single Component

Hazard Level












Application.  Apply HOLD*BLAST in a dilution of 1:50 with potable water directly onto the substrate (1 part HOLD*BLAST to 50 parts water). Sufficient product must be applied uniformly across the substrate to thoroughly wash the surface, with no areas missed. This may be accomplished by various methods, such as pressure washer, airless sprayer, conventional sprayer, roller, brush, pump up sprayer, after UHP water jetting or during wet abrasive blasting. Wet abrasive blasting or slurry blasting typically allow much higher dilution rates, often up to 1:250. It is highly recommended that a minimum of a 1500 psi pressure washer be used. This is to ensure "driving" the solution into the profile of the surface.

Start work at the highest point and progress downwards. After the substrate has been thoroughly washed, it should be allowed to dry, or be dried, prior to coating application. Usually, dilution may be increased with good quality water and/or low salt contamination levels. Poorer quality water can often be used, but will require a higher concentration of HOLD*BLAST. Water quality, salt contamination levels, humidity and temperature are all variables that can affect dilution rates and results. Test on a small area and adjust the dilution rate until the desired results are obtained.

Post-Application.  Excess or puddled water should be swept, wiped or blown from flat surfaces. After application of HOLD*BLAST, surfaces should always be tested to assure any remaining soluble salts are at an acceptable level. High levels of soluble salts will cause premature coating failure and degradation of the substrate. Test for levels of chlorides and nitrates with the standard CHLOR*TEST kit. Test for levels of chlorides, sulfates and nitrates with the CHLOR*TEST "CSN Salts" kit. Both kits offer the highest degree of accuracy and are the easiest to use of any complete field test kit available.

Typical time for "holding the blast" is 72 hours or longer with no rain, dew or condensation on the surface. In highly humid environments, with surfaces contaminated with low salt levels, the 1:50 dilution should be sufficient. In low humidity and low salt levels, the dilution ratio may be extended. 

Safety Precautions.  Keep out of reach of children. Do not mix with other chemicals. See MSDS for full precautions prior to use.