HD-ACID

Heavy Duty Hydrofluoric Masonry and Stone Detergent

Description and Use
An exceptionally strong hydrofluoric acid cleaner for deep stains in most porous masonry surfaces. This is an excellent cleaner for pulling stains of pollution and minerals from the pores of open face brick and sandstones. HD Acid is not safe on glass or most surfaces. Precautions to protect the surrounding environment must be used at all times. The person applying this product must take all necessary precautions including but not limited to rubber gloves, rubber suit, taped sleeves, goggles, face shield and safety helmet. Glass, plants, and sensitive surfaces such as anodized aluminum, marble, and limestone should always be protected by plastic or coating. It is recommended that you use GS Restoration or SafeRestore for hard faced or glazed surfaces.

Advantages
*Concentrated for super strength cleaning action.
* Proven effective for cleaning the dirtiest and most heavily carboned buildings.
* Safer than sandblasting. Will not pit or damage the masonry surface when properly used.

Limitations          
* Not recommended for interior use.
* May not be suitable for some polished stone, glazed surfaces, glass or anodized aluminum.

Technical Data
Appearance & Odor: Pale Amber, acrid odor
Physical State: Liquid
pH: N/A
Vapor Pressure(mmHg): N/A
Vapor Density (air=1): N/A
Boiling Point: 150° F
Freezing/Melting Point: N/A
Specific Gravity (WATER =1): 1.404
Evaporation Rate: As water
Solubility in Water: Complete
Surface & Air Temperatures

Protect:
Test and protect adjacent and surrounding surfaces not intended to be cleaned from exposure to the cleaning solution. Heavy Duty Acid is corrosive, etches glass and architectural aluminum and is harmful to wood, painted surfaces and foliage. Beware of wind drift.

Application Information
To avoid harm to masonry, do not clean when temperatures are below freezing or will be overnight. Best cleaning results are obtained when air and masonry surface temperatures are 40° Fahrenheit or above. If freezing conditions exist prior to application, allow adequate time for masonry to thaw.

Pre-Testing
Always test prior to beginning full-scale cleaning operations. Testing should confirm cleaning effectiveness on each type of surface and stain designated to be cleaned. Test also to determine the desired surface contact time and any potential for adverse reactions with adjacent materials. Allow test panels to dry thoroughly before evaluating final appearance and results.

Dilutions
This product should always be diluted. Dilutions will range from 2:1 to 20:1. 2:1 would be appropriate on stone or open face brick only. 20:1 would be for paint wash remover and hard faced bricks. Note: Dilutions will vary based on application and surface to be cleaned.

Application Instructions
A test patch is always done before a job to determine dilutions, proper product, and final results. We recommend two mild applications with no rinse between as superior to one strong application. Apply the product with an acid brush or low pressure applicator, either electric or hand pump. Dwell times are relatively short with this product so do small areas at one time or have rinsers working at the same time as an the applicator. Rinsing must be done with a high pressure washer as the Hydrofluoric acid will penetrate and solubilize deeper then low pressure can reach. Environmental regulations vary greatly so that it is impossible to determine the best approach to dealing with the runoff, in the past neutralization before rinsing was recommended. Check your local regulations and situation before proceeding.

Coverage Rates
Coverage rates will vary from 100 - 250 sq. ft./gal. depending on the surface porosity, texture and severity of staining.

Safety Information
Precautionary Measures: Always wear goggles and rubber gloves when handling this product. Keep off of skin and clothing. If material comes in contact with clothing, wash before reuse. Contains Hydrofluoric and Sulfuric Acid, do not get in eyes, on skin or clothing. Avoid breathing fumes. Keep container closed when not in use. Use with adequate ventilation. Applicators should wear rain suit of plastic, rubber or PVC, boots and gloves, face shields and goggles to avoid splash to bare skin or eyes and MIOSH/ MSHA approved respiration for use with Hydrofluoric acid. Take precautions to avoid exposing building occupants and workers to fumes. Dispose of empty containers according to federal, state and local requirements. Use well maintained staging, scaffolding or swing stages equipped with steel cable. Use polypropylene ropes and safety lines. Avoid drifting of material or rinse water onto autos and pedestrians by protecting or diverting such traffic. Do not ever dilute HD Acid with any other product except water. Do not use for any other applications other than specified. Do not remove label. Read Material Safety Data Sheet for additional safety and health hazard information prior to use.

First Aid - +
Instructions In Case Of Contact Or Exposure Skin & Eye Contact:
Eyes: Flood with water for fifteen minutes. Seek immediate medical attention.
Skin: Wash off with soap and water immediately when contact occurs.
Physician Note: make a salve out of calcium gluconate at 2.5% & petroleum jelly or KY Jelly at 97.5%
Inhalation: Remove to fresh air. Call physician and seek medical attention.
Ingestion: Drink copious amounts of water. Do not induce vomiting. Immediate medical attention is needed.

Spill or Leak Procedures
Waste Disposal Method: Check state, local or federal regulations for your area. Steps to be taken if material is released or spilled: wear proper protective equipment while doing cleanup. Large spill: Dike and contain for intended use. Small spill: absorb on oil dry and place in approved container for disposal.

Container Handling/Storage
Keep container closed when not in use. When diluting slowly add acid to water while stirring to avoid violent reaction. Store in a cool dry place. Vent bung before opening. Always wear proper protective equipment.

Notice
This product has been classified in accordance with the hazard criteria of the CFR.

Disclaimer
The information herein is given in good faith, but no warranty , either expressed or implied is made. Final determination of the suitability of any material is the sole responsibility of the user. All materials may present unknown hazards and should be used with caution. Although certain hazards are described herein we cannot be sure or guarantee these are the only hazards which exist.

Customer Service
Factory personnel are available for assistance at 800-313-8505 and will send you additional information on products as necessary.