Document 7M83nbQBGO8mDjGOwKvZr0raj
39--Chemical Hazards
tribute hazardous properties and should not be overlooked
Signal word. This word is intended to draw attention to the presence of hazard, and to indicate the degree of seventy The Signal Words used, m the order of diminishing se venty of hazard are
0 Danger--Serious, severe, hazardous
W Warning--Moderate,
harmful
intermediate,
C Caution--Minor, mild, lmtating
The degree of severity can be expressed only in relative terms Dancer1 is the strongest of the three words and is used for those products presenting the most senous hazards Cau tion1 is for those compounds presenting the least senous hazards. Warning! is intermedi ate between Danger1 and Caution1
Type of hazard. This statement gives no tice of the hazards that are present in connec tion with the customary or reasonably antici pated handling or use of the product Many chemical products will present more than one type of hazard, m which case, appropnate statements for each significant type are in cluded In geneial, the most serious hazard is
stated first Seventy of toxic or fire hazard from the
undiluted matenal is normally used 0 Impunties, mixtures, and conditions of use may influence this
Combine degree of seventy (signal word) with descnption statement below
1 Flammable matenal
2 Oxidizing matenal--Contact with other combustible matenal may cause fire
3 Gas or vapor rapidly toxic or extremely irntating on exposure for a short time or to low concentration
4 Gas or vapor harmful or lmtating on pro longed or repeated exposure, or exposure to high concentrations
5 Gas or vapor physiologically inert, but displaces oxygen available for breathing
6 Dust hazardous when inhaled or touched
1202
7 Irritant, sensitizer, corrosive--Causes skin imtabon or bum
8 Toxic through skin absorption
Column 5
Precautions to take These instructions are intended to supplement the statement on "Severity and Type of Hazard" by briefly set ting forth measures to be taken to avoid in jury or damage from stated hazards
To minimize hazards, take precaution" indi cated by signal number listed below
1 Keep away from heat, sparks, open flame
2 Avoid spilling, contacting skm, eyes, clothing
3 Use adequate ventilation or personal pro tection Avoid breathing dust, fumes, mists, gases, vapors
4 Avoid contact with acids, moisture, com bustibles
5 Do not handle or use until safety precau tions outlined in data sheets, or recom mended by consultant or manufacturer, are understood
Many products present no hazard m normal handling and storage For these products, no precautionary statements are necessary The development of new chemical products, and the introduction of chemical processes into ever-widening fields, have accentuated the need for obtaining appropnate information in those cases where there are hazards requiring special precautions Precautionary informa tion should, so far as is practicable, reach every person using, handling, or storing haz ardous substances For labeling of consumer products and for identification during trans portation, consult appropnate federal agencies
Column 6
Oral toxicity rating The numencal toxicity rating of column 6 is largely explained
See MCA Manual L-l, 1961 Manufacturing Chemists' Assn, Inc, 1825 Connecticut Ave, NW , Washington, D C 20009, for further details
# See Gleason, Gosselin, and Hodge, Clmtcal Toxicology of Commercial Products, 2nd ed Wil liams and Wilkins Co, Baltimore, 1963