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B. HAZARDOUS CHEMICALS/CLASS OF HAZARDOUS CHEMICALS: Substitute low toxicity
chemicals for ones with high toxicity. This enhances personal safety and reduces impact to the
environment in terms of waste disposal. Following are groups of hazards.
* Liquid Corrosives * Solid Corrosives * Volatiles * Reactives:
C. SPECIAL HANDLING PROCEDURES AND STORAGE REQUIREMENTS: One shall
always regard unknowns to be toxic. Any mixture of toxic compounds is presumed to have a synergistic
effect, namely, the toxicity of the whole is greater than the sum of each component.
Any special handling requirements shall be noted on the Chemical Hazards Preparation Form.
Use the guidelines in part D, the MSDS for the chemicals, and hazard information in Appendix A and B of 1910.1200
and the NIOSH Pocket Guide, http://www.cdc.gov/niosh/npg/ to assess the hazards, select the PPE, develop the safe
work practice
s and emergency response procedures, etc. needed to complete the Chemical Hazards Preparation Form
in Appendix A. These procedures will be in addition to the general safe work practices outlined earlier in this Plan.
D. CHEMICAL HAZARD INFORMATION FOR A SPECIFIC COMPOUND: Knowing the hazards of a
chemical and how to properly handle and dispose of these compounds, including during the Pre and Post-Lab
operations, will help prevent harmful and unnecessary exposures.
For all compounds:
Work shall be performed with the smallest possible amount of the chemical or determine if a less hazardous chemical
or process could be used as a replacement.
Containers shall be kept closed as much as possible to reduce potential for spilling and exposure to vapors.
Contaminated gloves shall be removed before using a writing implement to take notes.
High Acute Toxicity, Reproductive Toxins, Carcinogens:
First, try to replace them with less hazardous materials.
Second, use videos or other methods of getting the lesson across.
If that fails then the Laboratory standard requires:
Specific consideration shall be given to the following provisions which shall be included where appropriate:
Establishment of a designated area;
Use of containment devices such as fume hoods or glove boxes;
Procedures for safe removal of contaminated waste; and
Decontamination procedures.
All use of such chemicals shall only be conducted with prior approval of the Chemical Hygiene Committee
and/or the CHO.
Many of these have OSHA Expanded Standards, a standard all their own with specific safe work practices,
medical evaluation, air monitoring, and recordkeeping requirements. These include:
[make life easy, get rid of them and don’t get more]
1910.1001 Asbestos
1002 Coal tar pitch
1910.1003 13 carcinogens
4-Nitrobiphenyl, Chemical Abstracts Service Register Number (CAS No.) 92933;
alpha-Naphthylamine, CAS No. 134327;
methyl chloromethyl ether, CAS No. 107302;
3,3'-Dichlorobenzidine (and its salts) CAS No. 91941;
bis-Chloromethyl ether, CAS No. 542881;
beta-Naphthylamine, CAS No. 91598;
Benzidine, CAS No. 92875;
4-Aminodiphenyl, CAS No. 92671;
Ethyleneimine, CAS No. 151564;
beta-Propiolactone, CAS No. 57578;
2-Acetylaminofluorene, CAS No. 53963;
4-Dimethylaminoazo-benezene, CAS No. 60117; and