|CAS Number||UN/NA Number||DOT Hazard Label||USCG CHRIS Code|
|NIOSH Pocket Guide||International Chem Safety Card|
- Known Catalytic Activity
Behavior in Fire: Contact with water applied to adjacent fires produces toxic, irritating fumes of hydrogen fluoride. (USCG, 1999)
Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below. More info about absorbents, including situations to watch out for...
- Cellulose-Based Absorbents
- Mineral-Based & Clay-Based Absorbents
As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 1777 datasheet.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
When material is not involved in fire, do not use water on material itself.
SMALL FIRE: Dry chemical or CO2. Move containers from fire area if you can do it without risk.
LARGE FIRE: Flood fire area with large quantities of water, while knocking down vapors with water fog. If insufficient water supply: knock down vapors only.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Cool containers with flooding quantities of water until well after fire is out. Do not get water inside containers. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2016)
Fully encapsulating, vapor-protective clothing should be worn for spills and leaks with no fire. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Use water spray to reduce vapors; do not put water directly on leak, spill area or inside container. Keep combustibles (wood, paper, oil, etc.) away from spilled material.
SMALL SPILL: Cover with DRY earth, DRY sand or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean, non-sparking tools to collect material and place it into loosely covered plastic containers for later disposal. Prevent entry into waterways, sewers, basements or confined areas. (ERG, 2016)
|QS = Tychem 2000 SFR|
|QC = Tychem 2000|
|SL = Tychem 4000|
|C3 = Tychem 5000|
|TF = Tychem 6000|
|TP = Tychem 6000 FR|
|BR = Tychem 9000|
|RC = Tychem RESPONDER® CSM|
|TK = Tychem 10000|
|RF = Tychem 10000 FR|
|Fluorosulfonic acid (>95%)||7789-21-1||Liquid||>480||>480||>480||>480|
A blank cell indicates the fabric has not been tested. The fabric may or may not offer barrier.
Special Warnings from DuPont
- Serged and bound seams are degraded by some hazardous liquid chemicals, such as strong acids, and should not be worn when these chemicals are present.
CAUTION: This information is based upon technical data that
DuPont believes to be reliable. It is subject to revision as
additional knowledge and experience are gained. DuPont makes no
guarantee of results and assumes no obligation or liability...
... in connection with this information. It is the user's responsibility to determine the level of toxicity and the proper personal protective equipment needed. The information set forth herein reflects laboratory performance of fabrics, not complete garments, under controlled conditions. It is intended for informational use by persons having technical skill for evaluation under their specific end-use conditions, at their own discretion and risk. Anyone intending to use this information should first verify that the garment selected is suitable for the intended use. In many cases, seams and closures have shorter breakthrough times and higher permeation rates than the fabric. Please contact DuPont for specific data. If fabric becomes torn, abraded or punctured, or if seams or closures fail, or if attached gloves, visors, etc. are damaged, end user should discontinue use of garment to avoid potential exposure to chemical. Since conditions of use are outside our control, we make no warranties, express or implied, including, without limitation, no warranties of merchantability or fitness for a particular use and assume no liability in connection with any use of this information. This information is not intended as a license to operate under or a recommendation to infringe any patent or technical information of DuPont or others covering any material or its use.
INHALATION: remove victim to fresh air; if he is unconscious, give artificial respiration.
EYES: flush with water until medical help arrives.
SKIN: flush with water until medical help arrives; soak burned area in strong Epsom salt solution; pay particular attention to area around fingernails.
INGESTION: give large amounts of water. (USCG, 1999)
AEGLs (Acute Exposure Guideline Levels)No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
|Fluorosulfonic acid (7789-21-1)||2 mg/m3||10 mg/m3||30 mg/m3|
PACs (Protective Action Criteria)
|Fluorosulfonic acid; (Fluorosulfuric acid) (7789-21-1)||2 mg/m3||10 mg/m3||30 mg/m3|
EPA Consolidated List of ListsNo regulatory information available.
DHS Chemical Facility Anti-Terrorism Standards (CFATS)
|Chemical of Interest||CAS Number||Min Conc||STQ||Security
|Fluorosulfonic acid||7789-21-1||ACG||APA||sabotage/ contamination|
- ACG = a commercial grade.
- APA = a placarded amount.
OSHA Process Safety Management (PSM) Standard ListNo regulatory information available.
Alternate Chemical Names
- FLUOROSULFONIC ACID
- FLUOROSULFURIC ACID
- FLUOROSULFURIC ACID (HSO3F)
- FLUOROSULPHONIC ACID
- FLUOSULFONIC ACID
- FLUOSULFURIC ACID
- MONOFLUOROSULFURIC ACID