Jasco® Green™ Muriatic Acid

With 90% lower emission of fumes than standard Muriatic Acid, Jasco® Green™ Muriatic Acid is the earth-friendly way to brighten masonry, etch concrete, remove excess wet mortar from bricks, clean algae and scum — and lower the pH balance in swimming pools.


Wear chemical-resistant gloves and chemical splash goggles. Remove all surface oil, grease, and dirt prior to using this product.

BRIGHTENING CONCRETE, MASONRY, BRICK, STONE, GROUT AND HARD SURFACES: Dilute 12 ounces of Muriatic Acid per gallon of water in a plastic sprinkling can or a plastic pump up sprayer. Gently stir with a non-metallic utensil. Apply evenly and spread with a broom to any missed areas. Allow to sit for 5 minutes. Then rinse thoroughly with water.

ETCHING CONCRETE: Dilute 24 ounces of Muriatic Acid per gallon of water in a plastic sprinkling can or a plastic pump up sprayer. Gently stir with a non-metallic utensil. Apply evenly and spread with a broom to any missed areas. Allow to sit for 5-10 minutes. Then rinse thoroughly with water. Allow surface to dry before applying a paint or coating.

CLEANING SCUM FROM BOAT HULLS: Protect non-fiberglass parts and trailer with plastic sheeting. Use full strength. Pour into a plastic bucket and apply with a natural bristle brush. Rinse thoroughly with water.

SWIMMING POOLS: Always wear chemical resistant gloves and protective eyegear. Remove the seal from the bottle and partially submerge the bottle in the pool. Pour the acid into the pool by tilting the bottle. Keep the mouth of the bottle only a couple of inches above the pool's surface. Average usage rate is 1/4 of a 1 gallon bottle per 10,000 gallons of pool water. It is recommended that you estimate this and not try to measure. Rinse any spills off you or the deck promptly with pool water.

IMPORTANT: Carefully read all cautions and directions before use. Do not mix with chlorine-type bleaches or other household chemicals. Use only water to dilute. Do not splash while mixing. In enclosed areas, vapors can cause metal corrosion. Do not use as a general purpose cleaner.

POISON!  CAUSES SEVERE BURNS TO EYES. SKIN IRRITANT. MAY BE FATAL IF SWALLOWED.VAPOR HARMFUL. Contains Hydrochloric Acid. Avoid contact with eyes, skin, and mucous membranes. Small amounts splashed into the eyes can cause blindness. Use with adequate ventilation. Avoid breathing mist and fumes. Do not take internally. Do not add water to acid. Add acid slowly to water.

FIRST AID: IN CASE OF EYE CONTACT, immediately flush with water, remove any contact lens, continue flushing with water for at least 15 minutes, then get immediate medical attention. IN CASE OF SKIN CONTACT, flush thoroughly with water for 15 minutes. If irritation persists, get medical attention. Remove any contaminated clothing and wash before reuse. IF SWALLOWED, immediately contact poison control center, hospital emergency room or physician. If person experiences headaches, dizziness or breathing difficulties, move to fresh air. If symptoms persist, get medical attention.

SPILL OR LEAK: Flush by flooding with plenty of water applied quickly to the entire spill. Small spills can be neutralized using baking soda. Apply until foaming stops.
STORAGE AND TRANSPORTATION: Ensure cap is closed and tightened. Securely place container in an upright position during transportation and storage.


What is Jasco® Green™ Muriatic Acid used for?
For etching clean concrete to prepare it for a sealer or finish, for brightening concrete, or for adjusting the pH in swimming pools.

Do I dilute Jasco® Green™ Muriatic Acid?
Dilute 12 ounces per gallon of water if using to brighten concrete, brick, stone or grout. Dilute 24 ounces per gallon of water if using to etch concrete.

Will Jasco® Green™ Muriatic Acid harm grass?
Yes, be sure to rinse grass well before and after application if product will come in contact with it.

Do I need to rinse Jasco® Green™ Muriatic Acid off the surface it’s applied to?
Yes, the surface it’s applied to needs to be rinsed off completely.

What’s the percentage of hydrochloric acid in Jasco® Green™ Muriatic Acid?
It’s 20% hydrochloric acid.

What is the shelf life of Jasco® Green™ Muriatic Acid?
Three years unopened and six months opened.

The “Directions for Use” are included to help you better understand our product. However, they do not provide you with all of the information needed to use the product safely and effectively. Prior to using any of our products, you should always read the entire label including all cautions. A copy of the current label is linked to this webpage.