Used as rocket fuel in space No ignition source (flame is necessary) Mixing concentrated hydrogen peroxide with an organic material, in the presence of a catalyst will react on its own, causing a very hot flame. Bread with drops of peroxide + leather = hot flame Class Rating Hazard Description Class 1 An oxidizing material whose primary hazard is that it may increase the burning rate of combustible material with which it comes in contact. Class 2 An oxidizing material that will moderately increase the burning rate or which may cause spontaneous ignition of combustible material with which it comes in contact. Class 3 An oxidizing material that will cause a severe increase in the burning rate of combustible material with which it comes in contact or which will undergo vigorous self-sustained decomposition when catalyzed or exposed to heat. Class 4 An oxidizing material that can undergo an explosive reaction when catalyzed or exposed to heat, shock or friction. TABLE 3 - Oxidizing Materials (as Classified by the NFPA) Class Rating Examples Class 1 aluminum nitrate potassium dichromate ammonium persulfate potassium nitrate barium chlorate potassium persulfate barium nitrate silver nitrate barium peroxide sodium carbonate peroxide calcium chlorate sodium dichloro-s-triazinetrione calcium nitrate sodium dichromate calcium peroxide sodium nitrate cupric nitrate sodium nitrite hydrogen peroxide (8-27.5%) sodium perborate lead nitrate sodium perborate tetrahydrate lithium hypochlorite sodium perchlorate monohydrate lithium peroxide sodium persulfate magnesium nitrate strontium chlorate magnesium perchlorate strontium nitrate magnesium peroxide strontium peroxide nickel nitrate zinc chlorate nitric acid (<70% conc.) zinc peroxide perchloric acid (<60% concen.) Class 2 calcium hypochlorite (<50% wgt) potassium permanganate chromium trioxide (chromic acid) sodium chlorite (<40% wgt.) halane sodium peroxide hydrogen peroxide (27.5-52% conc.) sodium permanganate nitric acid (>70% conc.) trichloro-s-triazinetrione Class 3 ammonium dichromate potassium chlorate hydrogen peroxide (52-91% conc.) potassium dichloroisocyanurate calcium hypochlorite (>50% wgt.) sodium chlorate perchloric acid (60-72.5% conc.) sodium chlorite (>40% wgt.) potassium bromate sodium dichloro-s-triazinetrione Class 4 ammonium perchlorate ammonium permanganate guanidine nitrate hydrogen peroxide (>91% conc.) perchloric acid (>72.5%) potassium superoxide
Pyrophoric chemicals are liquids and solids that will ignite spontaneously in air at about 130 degrees F. Titanium dichloride and phosphorus are example of pyrophoric solids; tributylaluminum and related compounds are examples of pyrophoric liquids. From Wikipedia on organic peroxides: In polymer chemistry Organic peroxides find numerous applications, often involving similar chemistry. Thus, peroxides serve as accelerators, activators, cross-linking agents, curing and vulcanization agents, hardeners, polymerisation initiators, and promoters. Drying oils, as found in many paints and varnishes function via the formation of hydroperoxides. Methyl ethyl ketone peroxide, benzoyl peroxide and to a smaller degree acetone peroxide are used as initiators for radical polymerization of some resins, e.g. polyester and silicone, often encountered when making fiberglass.
Self-reactive Substances What are unstable chemicals? Unstable or self-reactive substances are chemicals which have the potential to vigorously polymerize, decompose, condense, or become self-reactive under conditions of shock, pressure, temperature, light, or contact with another material. Major types of highly reactive chemicals are explosives, peroxides, water-reactives, and pyrophorics. What should I do when handling unstable chemicals? • Always wear safety goggles, closed toe shoes, and gloves • Handle under a hood if the reaction has the potential of creating gases • If there is a chance of explosion, use barriers or other forms of isolation methods • For some heat sensitive materials, temperature should be controlled. • Date all containers when received or opened
Acids have better warning properties than bases. Acids will burn quickly, the victim will seek water, FAST. Caustics, poor warning properties: slippery feeling, break down proteins in the skin.
Straightforward. Dead fish, dead tree.
Exclamation mark is for the weaker end. Irritant (Skin Irritation Category 2 and Eye Irritation Category 2A), Dermal Sensitizer (Category 1), Acute Toxicity (Category 4, harmful), Target Organ Toxicity/ STOT Category 3 = narcotic effects, respiratory irritation
Hazard Communication Training by Maine Department of Labor
OSHA 29 CFR 1910.1200
BENEFITS OF ADOPTING THE GHS
• Increase the quality and consistency of information
• Reduce confusion – Increase comprehension of
• Help address literacy problems
• Labels are more defined and will now require:
Name, address, and phone number
• Safety Data Sheet (not Material Safety Data Sheet)
• Uses a 16 section format
ORGANIZATION OF STANDARD
g) Safety Data Sheets *
b) Scope and Application
h) Employee Information and
c) Definitions *
i) Trade Secrets
e) Written Hazard Communication
j) Effective Dates *
f) Labels and Other Forms of
• All hazards to be CLASSIFIED not Evaluated
• "Classification" means to identify the relevant data
regarding the hazards of a chemical; review those data to
ascertain the hazards associated with the chemical; and
decide whether the chemical will be classified as
hazardous according to the definition of hazardous
chemical in this section. In addition, classification for health
and physical hazards includes the determination of the
degree of hazard, where appropriate, by comparing the
data with the criteria for health and physical hazards.
• "Hazard class" means the nature of the physical or health
hazards, e.g., flammable solid, carcinogen, oral acute
b) SCOPE AND APPLICATION
• All chemicals known to be present are covered.
• Practical accommodations for special situations
• Address interface with other Federal laws.
• Physical hazard definitions removed and placed in new
• Deleted terms: flashpoint, hazard warning, material
safety data sheets.
• Some definitions were revised to be consistent with the
• New definitions added for classification.
• Signal Word - means a word used to indicate the relative
level of severity of hazard and alert the reader to a
potential hazard on the label. The signal words used in
this section are "danger" and "warning." "Danger" is used
for the more severe hazards, while “Warning" is used for
the less severe.
d) HAZARD CLASSIFICATION
• Chemical manufacturers and importers shall
evaluate chemicals produced in their workplaces
or imported by them to classify the chemicals in
accordance with this section. For each chemical,
the chemical manufacturer or importer shall
determine the hazard classes, and where
appropriate, the category of each class that apply
to the chemical being classified. Employers are not
required to classify chemicals unless they choose
not to rely on the classification performed by the
chemical manufacturer or importer for the
chemical to satisfy this requirement.
e) WRITTEN HAZARD
• Employers must have a written program describing
how the rule will be implemented, including a list of
hazardous chemicals, methods for informing
employees about non-routine tasks.
• Employers must make sure the program is current
when the new provisions are implemented (e.g., list
of hazardous chemicals may have to be updated).
f) LABELS AND OTHER FORMS OF
• Shipped containers to be labeled with product
identifier; signal word; hazard statement(s);
pictograms; precautionary statements; and
• Specifies information by hazard class and category
• Appendix “C” is a cookbook approach for labeling.
LABEL REQUIREMENTS – SHIPPING
Name, address, and phone number of the
The final rule requires containers shipped six months after the information is
available to be labeled correctly.
Irritant (skin and eye)
Respiratory Tract Irritant
Hazardous to Ozone Layer
Xyz Chemical Co.
Flammable Liquid and Vapor
Harmful if Swallowed
May Cause Damage to Organs (Liver)
May Cause Damage to Organs through prolonged or repeated exposure (Heart)
If on skin
• Same workplace –specific labeling.
• Make sure the labeling system is updated to be
consistent with the new classifications.
• NFPA/HMIS Systems - NO
• (rating systems v. classification)
• GHS and NFPA/HMIS Reversed
• Employers have more flexibility. The basic requirement for workplace
labeling is as follows:
• “the final rule retains the flexibility by indicating that the employer
can choose to label workplace containers either with the same label
that would be on shipped containers for the chemical under the
revised rule, or with label alternatives that meet the requirements for
• The HCS 2012 specifically states for workplace container labeling that
labels must contain GHS label elements (pictograms, etc.) OR
• “Product identifier and words, pictures, symbols, or combination
thereof, which, in conjunction with the other information immediately
available to the employee under the HC program, will provide
employees with the specific information regarding the physical and
health hazards of the hazardous chemical.”
g) SAFETY DATA SHEETS
• Mandates 16-section SDS headings, order of
information, and what information is to be provided
under the headings.
• Will not enforce sections 12-15 that require
information outside OSHA’s jurisdiction.
16- SECTION SAFETY DATA SHEET
1. Identification of the substance
or mixture and of the supplier
10. Stability and reactivity
2. Hazard identification
3. Composition/information on
12. Ecological information
4. First aid measures
13. Disposal considerations
5. Firefighting measures
14. Transport information
6. Accidental release measures
15. Regulatory information
7. Handling and storage
16. Other information including
information on preparation and
revision of the SDS
8. Exposure controls/personal
9. Physical and chemical
h) EMPLOYEE INFORMATION AND
• Clarifies that the labels on shipped containers and
workplace labels must be explained, as well as SDS
• Workers will have to be trained on the new label
and SDS formats before all the provisions of the rule
• Labeling elements
• Train the employees on the type of information that the
employee would expect to see on the new labels.
• How they might use that information
• Product identifier, Signal Word, hazard statement(s),
pictogram(s), precautionary statement(s), and name, address
and phone number of the responsible party.
• General understanding of how the elements interact
• For example – explain there are two signal words: Danger means a
more severe hazard within a hazard class. Warning is for less severe
• Safety Data Sheet
• Train the employees on the standardization 16 section format
and the type of information they would find in the various
i) TRADE SECRETS
• Allows specific chemical identity to be protected
when it is a legitimate trade secret.
• Specifies conditions for protection or for release
when there is a safety and health need for
• The percentage of a substance in a mixture is also
considered to be a type of trade secret subject to
the provisions in the rule.
• Became effective May 25, 2012
• Employees to be trained by December 1, 2013
• Update alternative workplace labeling and hazard
communication program as necessary by June 1,
PERSONAL PROTECTION EQUIPMENT
• Assessment required
• Each task
• Signed by CEO