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Sulphuric Acid on the WebTM Technical Manual DKL Engineering, Inc.

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Sulphuric Acid on the Web

Introduction
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DKL Engineering, Inc.

Handbook of Sulphuric Acid Manufacturing
Order Form
Preface
Contents
Feedback

Sulphuric Acid Decolourization
Order Form
Preface
Table of Contents

Process Engineering Data Sheets - PEDS
Order Form
Table of Contents

Introduction

Bibliography of Sulphuric Acid Technology
Order Form

Preface
Contents

Sulphuric Acid Plant Specifications
 

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Sulphuric Acid Plant Safety - Sulphuric Acid/Oleum
November 3, 2003

Introduction
Eye/Face Protection

Protective Clothing
Safety Signs
Associated Links

Introduction

Sulfuric acid is a clear, colourless to dark brown, odourless, dense, oily liquid. It will not burn but it can decompose at high temperatures forming toxic gases, such as sulfur oxides.   Contact of sulfuric acid with combustible materials may cause fire.  It is considered to be highly reactive.  Contact with many organic and inorganic chemicals may cause fire or explosion and contact with metals liberates flammable hydrogen gas. It also reacts violently with water.

Sulfuric acid is VERY TOXIC.  It may be fatal if inhaled or swallowed and it is CORROSIVE to the eyes, skin and respiratory tract. It may cause blindness and permanent scarring.  It also causes lung injury and these effects may be delayed.  Strong inorganic acid mists containing sulfuric acid are CARCINOGENIC.

Eye/Face Protection

To protect your eyes from sulphuric acid, chemical safety goggles must be worn at all times in designated areas.  A face shield may also be necessary when handling sulfuric acid in an open system.

Protective Clothing

Acid Concentration > 8 hour
Recommended
> 4 hour
Recommended
1 to 4 hour
Use with Caution
< 1 hour
Not Recommended
Sulphuric Acid, Fuming Saranex™
Responder®
Barricade®
TrellChem® HPS
Teflon™
Tychem® 10000
Polyvinyl Polyvinyl alcohol
CPF® 3
>70 wt% Sulphuric Acid Butyl rubber
polyethylene
Teflon™
Saranex™
4H™
Barricade®
CPF® 3
Responder®
TrellChem® HPS
Tychem® 10000
Viton™
Neoprene
polyvinyl chloride
Viton™
Natural rubber
nitrile rubber
polyvinyl alcohol
30 to 70 wt% Sulphuric Acid Butyl rubber
natural rubber
neoprene
polyethylene
polyvinyl chloride
Teflon™
Saranex™
Barricade®
Responder®
4H™
CPF® 3
Viton™
TrellChem® HPS
Tychem® 10000
- Nitrile rubber Polyvinyl alcohol
<30 wt% Sulphuric Acid Butyl rubber
natural rubber
neoprene
polyethylene
polyvinyl chloride
Teflon™
Viton™
Barricade®
Responder®
Saranex™
4H™
CPF® 3
TrellChem® HPS
Tychem® 10000
- - Polyvinyl alcohol.

Notes:
1. Recommendations are NOT valid for very thin Natural rubber, Neoprene, Nitrile and PVC gloves (0.3 mm or less).
2. Recommendations are valid for permeation rates reaching 0.1 µg/cm2/min or 1 mg/m2/min and over.  Resistance of specific materials can vary from product to product.  Breakthrough times are obtained under conditions of continuous contact, generally at room temperature.  Evaluate resistance under conditions of use and maintain clothing carefully.

Saranex™ is a trademark of the Dow Chemical Company
Tychem® is a registered trademark of DuPont
CPF® 3 is a registered trademark of DuPont
Barricade® is a registered trademark of DuPont
TrellChem® is a registered trademark of Trelleborg, Sweden
Responder® is a registered trademark of Kappler

Reference: Forsberg, K., et al. Quick selection guide to chemical protective clothing. 3rd edition. Van Nostrand Reinhold, 1997.

Safety Signs

General warning sign for sulphuric acid. DANGER H2SO4 Sign.gif (13800 bytes)
General warning sign for corrosive material. corrosive placard.gif (8922 bytes)  corrosive hazard sign.jpg (4846 bytes)          class_e.gif (5384 bytes)  
The National Fire Protection Association - NFPA 704 uses a symbol system designed as a diamond-shaped label containing four differently colored squares.  A number (0 - 4) or an abbreviation is added to each square indicating the order of hazard severity.  The higher the number, the greater the hazard.

Flammability (Red) - 0 - Will not burn
Health Hazard (Blue) - 3 - Extreme danger
Reactivity (Yellow) - 2 - Violent reaction with water
Special Hazard (White) - None

There are only two NFPA 704 approved symbols for Special Hazards: OX (oxidizer) and W (unusual reactivity with water).  Other symbols maybe used which are not compliant with NFPA 704 such as 'ACID' or 'COR' (corrosive - base or acid)

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