Page 5 - Combined_8_OCR

Tolylene Diisocyanate Manufacturing Chemists’ Association, Inc. Manual
Sheet
SD-73 ‘

(d) Industrial Canister Type Gas Masks, (d) When extended exposure is likely.
equipped with full face pieces and approved by the
U. S. Bureau of Mines, fitted with the proper canister (e) In equipment cleaning and repair work.
for absorbing organic vapor, will afford protection
against concentrations of tolylene diisocyanate vapor 5.2.4 Head Protection
not exceeding 2 per cent by volume when used in
accordance with the manufacturer’s instructions. The “Hard” hats should be worn where there i& any
oxygen content of the air must not be less than 16 danger from falling objects. If hard hats are not
per cent by volume. The masks should be used for considered necessary, soft-brimmed hats or caps
relatively short exposure periods only. They may should be worn to give protection against liquid
not be suitable for use in an emergency since, at that leaks and splashes.
time, the actual vapor concentration is unknown and 5.2.5 Foot Protection
may be very high. The wearer must be warned to
leave the contaminated area immediately on detecting Safety shoes with built-in steel toe caps are
the odor of a harmful vapor; this is an indication recommended for workers handling drums and cans
that the mask is not functioning properly or that the of tolylene diisocyanate. Shoes should be thorough­
vapor concentration is too high. ly washed with soap and water after mild external
contamination, and should be discarded after severe
Note: Where carbon monoxide may be en­ contamination.
countered in addition to tolylene diisocyanate the
mask should be equipped with an “all purpose canis­ 5.2.6 Body, Skin and Hand Protection
ter” and a “timing device” as approved by the U. S.
Bureau of Mines. 5.2.6.1 Contact of liquid tolylene diisocyanate
with the skin may lead to irritation and blistering.
5.2.3.4 Air or oxygen supplied masks, A long-sleeved shirt should be worn whenever there
equipped with full face pieces and approved by the is any danger of skin .contamination. Chemical
U. S. Bureau of Mines, should be used under the workers’ rubber gloves and impervious aprons should
following conditions:
be worn where possibility of spill or splash exists.
(a) In emergencies when the vapor concentra­
tion is not definitely known. 5.2.6.2 Should liquid tolylene diisocyanate
come in contact with the skin, affected areas should
(b) When the vapor concentration is over 2 be thoroughly washed with soap and water. Alcohol
per cent by volume.
may be used for a rinse after soap and water have
(c) When the oxygen content of the air may been used. Contaminated clothing should be re­
be less than 16 per cent by volume. moved and laundered before re-use.

6. FIRE F GHTING

6.1 Due to its high flash point, tolylene diisocyanate 6.3 Personnel who are engaged in fighting tolylene
does not constitute a severe fire hazard. However, it diisocyanate fires must be protected against nitrogen
is important that the proper fire-fighting equipment is dioxide fumes, as well as tolylene diisocyanate
available in case it should be needed.
vapors. Any fire-fighter close enough to be in con­
6.2 Water spray is effective for extinguishment of tact with these fumes should wear self-contained
fires covering large areas. Automatic sprinkler sys­
tems may be helpful in certain applications. Carbon breathing apparatus. The usual fireman’s body
dioxide or dry chemical extinguishers are also effec­ protection should be worn: rubber coat, boots, and
tive. helmet.

7. HANDLING AND STORAGE

7.1 USUAL SHIPPING CONTAINERS container is the 55-gallon tight-head lined drum.
Drums complying with ICC Specification 17E are
7.1.1 ICC Classification and Regulations
commonly used. Drums conforming to Consolidated
Tolylene diisocyanate is not classified as Freight Classification Rule 40, Section 5, are also
dangerous chemical and therefore is not subject satisfactory.
ICC Regulations governing the transportation
hazardous articles. 7.1.3 Labeling and Identification
7.1.2 Type and Size Each container (including tank cars and tank
Tolylene diisocyanate may be shipped in drums, trucks) should carry identifying label or stencil that
tank trucks, or tank cars. The most widely used is clearly Visible*

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