PASS® Emulsion: Polymerized Asphalt Surface Sealer


Afton PASS flag-1PASS® (polymerized asphalt surface sealer) is a high-performance emulsion that is especially effective at treating deteriorated pavements. It provides crack-sealing/rejuvenation/chip-sealing in one, works in cool temperatures, and gives exceptional chip retention.

ASI has been a licensed manufacturer of PASS for over 15 years, marketing to cities and counties throughout the Utah, Wyoming and Idaho regions. 








N/E=None Established N/A=Not Applicable N/D=No Data Available

1) Product Description: PASS - CR

Appearance and odor : Viscous brown liquid with slight resinous odor.

Hazard Rating:

Health: 1
Fire: 0
Reactivity: 0

ANSI : Caution! May cause eye and skin irritation.


2) Hazardous Components

Ingredient CAS No. Percent TLV PEL
Petroleum Asphalt 8052-42-4 Proprietary 5mg/m3 N/E
Heavy Napthenic distillate Solvent Extract 64742-11-6   5mg/m3  
Hydrochloric Acid 7647-01-0   5ppm 5ppm
Proprietary Water Base Solution N/A   N/A N/A


CAUTION: There maybe the possibility of volatile vapors developing under extreme heat conditions while being stored in bulk containers.


3) Overview & Health Information

PASS – CR contains petroleum asphalt. After the water has been removed from the product, the residue may burn when exposed to direct and continuous flame. Petroleum asphalt forms fumes when heated. These fumes may cause irritation to the nose, throat and respiratory tract. Fumes have not been determined to be cancer causing.




4) Physical Data

Description : Viscous brown liquid, sweet odor.

Boiling Point : 212°F (100°C)

Vapor Pressure : 23.8 mm of Hg at 77°F (25°C)

Solubility in water : 100%

Specific Gravity : 1.0

Percent Volatile by Volume : 33-45

Evaporation Rate : 0.03


5) Fire & Explosion Data

Flash Point (Closed Cup) : None unless water is removed.

Explosive Limits : N/D

Autoignition Temperature : N/D

Fire Point : N/D

Extinguishing Media : Dry Chemical, Water, Foam, CO2

Hazardous Decomposition Products : Carbon monoxide and Carbon dioxide.

Special Fire Fighting Procedures : If entering a confined area, fire fighters should wear a NIOSH approved self-contained breathing apparatus

Unusual Fire & Explosion Hazards : None directly from the product

Avoid contact with alkalie and strong oxidizers

NOTE: Care should be taken to never introduce an open flame or other source of ignition to any product while being stored in bulk containers.


6) Health Hazard Data

Eyes : Slight Irritation

Skin : Mild irritation. Repeated or prolonged contact can cause dry scaly dermatitis.

Breathing : Possible respiratory irritation, nausea, and vomiting

Swallowing : Stomach irritation, nausea, and vomiting.


If in eyes : Flush with large amounts of water while holding eyelids open. Get medical attention if irritation persists.

If on skin : Wash with soap and water or use waterless hand cleaner.

If swallowed : If victim is conscious, give liquids. INDUCE VOMITING. Call a physician.


7) Reactivity Data

Hazardous Polymerization : Will not occur.

Stability : Stable

Incompatibility : Avoid contact with strong oxidizers.

Spill or leak procedures

Dike or contain spill with, floor dry, sand, etc. Pump liquid to containers or storage vessel. Soak up residue with absorbent material. Scoop contaminated absorbent and diking material into containers for disposal.

Waste Disposal :

Recovered materials may be blended with aggregate and used for patching or other maintenance use. Other wastes should be disposed of according to federal, state, and local regulations.

Protective equipment to be used

Respiratory Protection : NIOSH approved cartridge respirator with organic vapor cartridges if other controls are not effective.

Ventilation : Normal ventilation is usually adequate.

Protective Gloves : Impervious gloves such as neoprene or vinyl.

Eye Protection : Wear chemical safety goggles if splashing may occur.

Other Protective Equipment : Wear a protective apron if splashing or repeated contact is likely.


Special precautions or other comments

Do not allow to freeze.

Do not store in excess of 200°F (93°C).

PASS-CR Tech Sheet

PASS - CR Tech Sheet

 PASS - CR Specifications


Test on Emulsion Method PASS
Viscosity @ 122°F (SFS) ASTM D244 50-400
Residue, w%, max ASTM D244 65
pH ASTM E70 2.0 - 5.0
Sieve, w%, max ASTM D244 0.1
Oil distillate, w%, max ASTM D244 0.5

 Specific Gravity of Residue of recovered latex min.

 we-em-100-2  1.15
Test on Residue    
Viscosity @ 140°F, P ASTM D2171 5000
Elastic Recovery on Residue by distilation % min AASHTO T59 45
Penetration @ 39.2°F, min. ASTM D5 40
Modified Torsional Recovery*, %, min CA332 40
Test on Latex    
Specific Gravity (minimum) ASTM 1475 1.08
Tensile Strength, die C dumbbell, psi, minimum ASTM D412


Swelling in rejuvenating agent, % Maximum; 48 hours exposure @104 F ASTM D471 modified  40% intact film
Test On Rejuvenaing agent:    
Flash Point, COC  ASTM D92  
 Hot Mix recycling Agent Classification  ASTM D4552  380 Min
Viscosity, 140F cst   50-175
Asphaltenes   1.0 Max


*California test method CA331 for recovery of residue for torsional testing.

Torsional recovery measurement to include first 30 seconds.


Material Certification:

  1. With the bid, the bidder shall submit a certified lab report showing that the material meets specification. This lab report must be no more than 45 days old.
  2. The user agency may require that the low bidder supply these notarized certifications with each batch supplied to the agency.
  3. The user agency may send samples to a professional testing laboratory of its choice during the course of the project.
  4. If a sample fails to meet specification the user agency may, at its discretion, enforce a penalty for each ton of emulsion used that day.