HYDROFLUORIC ACID AND SULFURIC ACID MIXTURE
|CAS Number||UN/NA Number||DOT Hazard Label||USCG CHRIS Code|
|Health||4||Can be lethal.|
|Flammability||0||Will not burn under typical fire conditions.|
|Instability||2||Readily undergoes violent chemical changes at elevated temperatures and pressures.|
|Special||Reacts violently or explosively with water.|
|NIOSH Pocket Guide||International Chem Safety Card|
- Strong Oxidizing Agent
- Known Catalytic Activity
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. For UN1796, UN1826, UN2031 at high concentrations and for UN2032, these may act as oxidizers, also consult ERG Guide 140. Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance may react with water (some violently), releasing corrosive and/or toxic gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. (ERG, 2016)
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Reaction with water or moist air may release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. (ERG, 2016)
For Sulfuric Acid look at the Sulfuric Acid datasheet.
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
- Expanded Polymeric 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: Increase, in the downwind direction, as necessary, the isolation distance shown above.
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)
Note: Some foams will react with the material and release corrosive/toxic gases.
SMALL FIRE: CO2 (except for Cyanides), dry chemical, dry sand, alcohol-resistant foam.
LARGE FIRE: Water spray, fog or alcohol-resistant foam. Move containers from fire area if you can do it without risk. Use water spray or fog; do not use straight streams. Dike fire-control water for later disposal; do not scatter the material.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. 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)
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area). All equipment used when handling the product must be grounded. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. A vapor-suppressing foam may be used to reduce vapors. DO NOT GET WATER INSIDE CONTAINERS. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Prevent entry into waterways, sewers, basements or confined areas.
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. (ERG, 2016)
Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible. (ERG, 2016)
|QC = Tychem QC|
|SL = Tychem SL|
|TF = Tychem F|
|TP = Tychem ThermoPro|
|C3 = Tychem CPF 3|
|BR = Tychem BR|
|RC = Tychem Responder® CSM|
|TK = Tychem TK|
|RF = Tychem Reflector®|
|Hydrofluoric acid (48-51%)||7664-39-3||Liquid||400||>480||>480||15||180||>480||>480||>480||>480|
|Hydrofluoric acid (60%)||7664-39-3||Liquid||52|
|Hydrofluoric acid (70%)||7664-39-3||Liquid||143||35||126||>480||>480||>480||>480|
|Hydrogen fluoride (gas)||7664-39-3||Vapor||imm.||35||imm.||imm.||170||135||135||>480||>480|
|Sulfuric acid (18%)||7664-93-9||Liquid|
|Sulfuric acid (30%)||7664-93-9||Liquid||>480|
|Sulfuric acid (50%)||7664-93-9||Liquid||>480|
"imm." indicates immediate; having a normalized breakthrough time of 10 minutes or less.
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.
Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. In case of contact with Hydrofluoric acid (UN1790), flush with large amounts of water. For skin contact, if calcium gluconate gel is available, rinse 5 minutes, then apply gel. Otherwise, continue rinsing until medical treatment is available. For eyes, flush with water or a saline solution for 15 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim calm and warm. Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed. (ERG, 2016)
AEGLs (Acute Exposure Guideline Levels)
|10 minutes||1 ppm||95 ppm||170 ppm|
|30 minutes||1 ppm||34 ppm||62 ppm|
|60 minutes||1 ppm||24 ppm||44 ppm|
|4 hours||1 ppm||12 ppm||22 ppm|
|8 hours||1 ppm||12 ppm||22 ppm|
|10 minutes||0.2 mg/m3||8.7 mg/m3||270 mg/m3|
|30 minutes||0.2 mg/m3||8.7 mg/m3||200 mg/m3|
|60 minutes||0.2 mg/m3||8.7 mg/m3||160 mg/m3|
|4 hours||0.2 mg/m3||8.7 mg/m3||110 mg/m3|
|8 hours||0.2 mg/m3||8.7 mg/m3||93 mg/m3|
ERPGs (Emergency Response Planning Guidelines)
|Hydrogen Fluoride (7664-39-3) **||2 ppm||20 ppm||50 ppm|
|Sulfuric Acid (Oleum [8014-95-7], Sulfur Trioxide [7446-11-9], and Sulfuric Acid [7664-93-9])||2 mg/m3||10 mg/m3||120 mg/m3|
indicates that odor should be detectable near ERPG-1.
PACs (Protective Action Criteria)
|Hydrogen fluoride; (Hydrofluoric acid) (7664-39-3)||1 ppm||24 ppm||44 ppm|
|Sulfuric acid (7664-93-9)||0.2 mg/m3||8.7 mg/m3||160 mg/m3|
EPA Consolidated List of Lists
|Regulatory Name||CAS Number/
313 Category Code
|CERCLA RQ||EPCRA 313
|Hydrofluoric acid||7664-39-3||100 pounds||100 pounds||100 pounds||X||U134|
|Hydrofluoric acid (conc. 50% or greater)||7664-39-3||100 pounds||100 pounds||100 pounds||X||U134||1000 pounds|
|Hydrogen fluoride||7664-39-3||100 pounds||100 pounds||100 pounds||313||U134|
|Hydrogen fluoride (anhydrous)||7664-39-3||100 pounds||100 pounds||100 pounds||X||U134||1000 pounds|
|Sulfuric acid||7664-93-9||1000 pounds||1000 pounds||1000 pounds|
|Sulfuric acid (aerosol forms only)||7664-93-9||1000 pounds||1000 pounds||1000 pounds||313|
- "X" indicates that this is a second name for an EPCRA section 313 chemical already included on this consolidated list. May also indicate that the same chemical with the same CAS number appears on another list with a different chemical name.
(EPA List of Lists, 2015)
DHS Chemical Facility Anti-Terrorism Standards (CFATS)
|Chemical of Interest||CAS Number||Min Conc||STQ||Security
|Hydrofluoric acid (conc. 50% or greater)||7664-39-3||50.00 %||1000 pounds||toxic|
|Hydrogen fluoride (anhydrous)||7664-39-3||1.00 %||1000 pounds||toxic||42.53 %||45 pounds||WME|
- WME = weapons of mass effect.
Alternate Chemical Names
- HYDROFLUORIC ACID AND SULFURIC ACID MIXTURE
- HYDROFLUORIC ACID AND SULPHURIC ACID MIXTURE
- HYDROFLUORIC-SULFURIC ACID MIXTURE
- SULFURIC ACID AND HYDROFLUORIC ACID MIXTURES
- SULPHURIC ACID AND HYDROFLUORIC ACID MIXTURES