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Sulfuric acid (H2SO4)

Find here the essential information on sulfuric acid (H2SO4) or hydrogen sulfate: characteristics, effects on health, detection devices & systems – H2SO4 gas detector – and proper respiratory protective equipment (gas mask or powered air purifying respirator with E-P2 combined filter).

H2SO4 gas detector and sulfuric acid respiratory protection

Sulfuric acid properties

Sulfuric acid (H2SO4) – also known as hydrogen sulfate – is applied to produce fertilizers and many chemical products (detergents, phosphoric acid). It is also largely used in metal treatment for pickling and chromating. At last, sulfuric acid is employed for producing both explosives and in batteries – particularly for lead car batteries.

CASTWA (8 hours)STEL (15 minutes)LELIPDensity / AirFilter / SCBA
7664-93-90.2 ppm0.5 ppm12.0 eV1.84E-P3

Sulfuric acid effects on health

At ambient temperature, sulfuric acid (H2SO4) is an oily, colorless and odorless (when it is a pure gas) liquid. In case of dirt, it might be yellow-brown. This very corrosive substance can cause skin burnings and severe eye damage (H314). Sulfuric acid vapors are also very harmful and can be lethal if inhaled. If used alone, hydrogen sulfate is neither flammable nor explosive.

Sulfuric acid hazards effects on health (H2SO4)

Sulfuric acid effects on health (H2SO4)

H2SO4 gas detector (sulfuric acid)

Given the harmfulness of this substance at very low concentrations, only an H2SO4 gas detector can accurately measure vapors concentrations. Only a few monitoring devices for sulfuric acid hazards are available: colorimetric gas detection tubes or very enhanced and expensive systems.

Colorimetric tubes

The colorimetric gas detection tube system is a simple and accurate solution composed by a manual sampling pump and a specific gas detection tube. They are designed for use together.

  • Gas detector tubes Colorimetric tube
  • Accurate: the sampling pump features a mechanical accuracy piston which creates a vacuum then enables direct reading on the colored tube (colorimetric tube)
  • Swift: one or two pump strokes are enough to draw sample and the value can be directly read on the tube
  • User-friendly: no knowledge, no specific process and no technical competence are required

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Colorimetric tubes

The colorimetric gas detection tube system is a simple and accurate solution composed by a manual sampling pump and a specific gas detection tube. They are designed for use together.

Gas detector tubes Colorimetric tube
  • Accurate: the sampling pump features a mechanical accuracy piston which creates a vacuum then enables direct reading on the colored tube (colorimetric tube)
  • Swift: one or two pump strokes are enough to draw sample and the value can be directly read on the tube
  • User-friendly: no knowledge, no specific process and no technical competence are required

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Portasens II is a rare gases leak detector with interchangeable sensors. This calibration-free detector is equipped with an internal sampling pump to accurately monitor around thirty gases.

  • Portable gas detector PortasenseII
  • Gas leak detection of alcohol, B2H6, Br2, C2H2, CH2O, Cl2, ClO2, CO, COCl2, F2, acid gas, GeH4, H2, H2O2, H2S, HCl, HF, NH3, NO, NO2, O2, O3, PH3, SiH4
  • Power supply: D alkaline battery (75 hours runtime) and rechargeable battery
  • 3 visual and audible alarms (alarm 1, alarm 2 and adjustable alarm)
  • Outputs: RS232 for data downloading on a PC
  • Additional information
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Rare gases leak detector – PORTASENS II

Portasens II is a rare gases leak detector with interchangeable sensors. This calibration-free detector is equipped with an internal sampling pump to accurately monitor around thirty gases.

Portable gas detector PortasenseII
  • Gas leak detection of alcohol, B2H6, Br2, C2H2, CH2O, Cl2, ClO2, CO, COCl2, F2, acid gas, GeH4, H2, H2O2, H2S, HCl, HF, NH3, NO, NO2, O2, O3, PH3, SiH4
  • Power supply: D alkaline battery (75 hours runtime) and rechargeable battery
  • 3 visual and audible alarms (alarm 1, alarm 2 and adjustable alarm)
  • Outputs: RS232 for data downloading on a PC
Additional information

PortaSense II gas leak detector is a single-gas detector to monitor rare gases. This device is powered with a D alkaline battery for around 75 hours runtime and an internal Nicad battery with an autonomy of around 6 hours.

The PortaSense gas leak detector can detect many gases thanks to its large range of interchangeable sensors. Majors detected gases are: alcohol, B2H6, Br2, C2H2, CH2O, Cl2, ClO2, CO, COCl2, F2, acid gas, GeH4, H2, H2O2, H2S, HCl, HF, NH3, NO, NO2, O2, O3, PH3, SiH4. In complement to this detected gases, this monitor features different measuring ranges for every gas.

The PortaSense II primarily detect gas leaks with its integrated sampling pump. This enables accurate measurements of hazardous gas concentrations. This gas leak detector with interchangeable sensors is moreover calibration-free, which makes it very versatile.

This single-gas detector features audible and audible alarms with 3 levels: caution, warning, and alarm with adjustable setpoints. A fourth alarm will indicate a low flow or low battery.

Thanks to its internal memory, the detector can record event data during 8 days with 1 minute interval. Furthermore, Portasense II features an RS32 output to connect a PC for data downloading.

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Toxic gas optical analysis – SPM FLEX gas detector

The SPM Flex is an optical calibration-free gas optical analysis system. This single point tape-based toxic gas detector can accurately (ppb measurement) and swiftly monitor the presence of a hazardous gas.

  • Honeywell SPM Flex gas monitor with optical toxic gas analysis
  • Chemcassette® technology – immune to interferences, more than 50 available gases.
  • Calibration-free, minimal maintenance .
  • Audiovisual alarm (2 thresholds).
  • User-friendly interface and gas concentration digital display.
  • UL 61010-1 / CSA-C22.2 / IEC 61010-1 certified

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Toxic gas optical analysis – SPM FLEX gas detector

The SPM Flex is an optical calibration-free gas optical analysis system. This single point tape-based toxic gas detector can accurately (ppb measurement) and swiftly monitor the presence of a hazardous gas.

Honeywell SPM Flex gas monitor with optical toxic gas analysis
  • Chemcassette® technology – immune to interferences, more than 50 available gases.
  • Calibration-free, minimal maintenance .
  • Audiovisual alarm (2 thresholds).
  • User-friendly interface and gas concentration digital display.
  • UL 61010-1 / CSA-C22.2 / IEC 61010-1 certified

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Sulfuric acid respiratory protection (H2SO4)

As sulfuric acid is very irritant to eyes, exposed workers should opt for a full-face mask for short-term applications or a more comfortable powered air purifying respirator with combined E-P3 filters. If concentrations exceed 60 times the OEL, a self-contained breathing apparatus is required.

Self-contained breathing apparatus – SIGMA

Sigma self-contained breathing apparatus from SCOTT Safety combines highest respiratory protection levels to a cost-effective and user-friendly equipment to meet industrial and marine sectors requirements.

Self-contained breathing apparatus – SIGMA

Sigma self-contained breathing apparatus from SCOTT Safety combines highest respiratory protection levels to a cost-effective and user-friendly equipment to meet industrial and marine sectors requirements.

Self-contained breathing apparatus SIGMA
  • High performance pneumatic system
  • Ultra-compact demand valve triggered from first breath
  • Lighweight and ergonomic backplate and fireproof harness
  • Possibility to switch to demand constant flow
  • Large range of full face masks: Vision 3, Promask PP and Panaseal
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Full face gas mask – SARI

The SARI gas mask provides operating comfort and efficient protection against toxic gases and particles (solid, radioactive, smokes), bacteria and virus.

Full face gas mask – SARI

The SARI gas mask provides operating comfort and efficient protection against toxic gases and particles (solid, radioactive, smokes), bacteria and virus.

masque sari contre les gaz toxiques et vapeurs chimiques
  • Compatible with PRO2000 filter range (gas, particle and combined)
  • Central phonic membrane for easy communication
  • Compatible with powered air equipment
  • Internal mask with non-return and anti-fog valves, reduces CO2
  • Fully adjustable 5 points harness for improved operating comfort
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Powered air purifying respirator Duraflow

The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

  • The powered air purifying respirator Duraflow PAPR

Powered air purifying respirator Duraflow

The Duraflow powered air respirator is a versatile solution for hazardous workspaces. It provides a quality respiratory protection for a fair price.

The powered air purifying respirator Duraflow PAPR
  • Compatibility with RD DIN 40 universal filter cartridges
  • Rechargeable battery – 2 available version: 8 or 16 hours runtime
  • Automatic airflow regulation (160l/min)
  • Visual alarms, notifications and display
  • CEN1294 & CE0086 certified, IP55/IP67

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Powered air purifying respirator PROFLOW 2

The Proflow2 PAPR is a compact and lightweight device featuring a curved backplate for user comfort during long-term applications. This powered air purifying respirator is available in 120L/min or 160L/min versions.

  • complete Scott Safety PAPR powered-air-purifying Proflow2

Powered air purifying respirator PROFLOW 2

The Proflow2 PAPR is a compact and lightweight device featuring a curved backplate for user comfort during long-term applications. This powered air purifying respirator is available in 120L/min or 160L/min versions.

complete Scott Safety PAPR powered-air-purifying Proflow2
  • DIN40 standard filters compatible with single-cartridge masks.
  • From 7 to 15 hours runtime depending on the face piece.
  • 70 dB audible low battery alarm.
  • Compatible with many face pieces.
  • Certifications: complies with EN12941 and 12942 standards.
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