OSHA Hazard Awareness Advisor

6b Chemicals
============
OSHA has issued comprehensive standards on the following chemicals.  
The permissible exposure limit and other limits for these substances 
are described below. You must read the full regulation for 
complete details.


* 1910.1001 - Asbestos.
=======================
Time-weighted average limit (TWA). The employer shall ensure that
no employee is exposed to an airborne concentration of asbestos in
excess of 0.1 fiber per cubic centimeter of air as an eight 
(8)-hour time-weighted average (TWA) 


Excursion limit. The employer shall ensure that no employee is exposed to an
airborne concentration of asbestos in excess of 1.0 fiber per cubic centimeter of
air (1 f/cc) as averaged over a sampling period of thirty (30) minutes 

* 1910.1003 - 13 Carcinogens 4-Nitrobiphenyl
=====================================================
  * 1910.1004 - alpha-Naphthylamine.
  * 1910.1006 - Methyl chloromethyl ether.
  * 1910.1007 - 3,3-Dichlorobenzidine (and its salts).
  * 1910.1008 - bis-Chloromethyl ether.
  * 1910.1009 - beta-Naphthylamine.
  * 1910.1010 - Benzidine.
  * 1910.1011 - 4-Aminodiphenyl.
  * 1910.1012 - Ethyleneimine.
  * 1910.1013 - beta-Propiolactone.
  * 1910.1014 - 2-Acetylaminofluorene.
  * 1910.1015 - 4-Dimethylaminoazobenzene.
  * 1910.1016 - N-Nitrosodimethylamine.

These standards apply to any area in which the 13 carcinogens 
(1910.1003 -.1016) are manufactured, processed, repackaged, 
released, handled, or stored.

* 1910.1017 - Vinyl chloride.
=============================
No employee may be exposed to vinyl chloride at concentrations greater than
1 ppm averaged over any 8-hour period, and

No employee may be exposed to vinyl chloride at concentrations greater than
5 ppm averaged over any period not exceeding 15 minutes.

No employee may be exposed to vinyl chloride by direct contact with liquid 
vinyl chloride.


* 1910.1018 - Inorganic arsenic.
================================
The employer shall assure that no employee is exposed to inorganic arsenic
at concentrations greater than 10 micrograms per cubic meter of air 
(10 ug/m(3)), averaged over any 8-hour period.


* 1910.1025 - Lead.
========================
The employer shall assure that no employee is exposed to lead at 
concentrations greater than fifty micrograms per cubic meter of air 
(50 ug/m(3)) averaged over an 8-hour period.

If an employee is exposed to lead for more than 8 hours in any work day, 
the permissible exposure limit, as a time weighted average (TWA) for that day, 
shall be reduced according to the following formula:

Maximum permissible limit (in ug/m(3))=400 divided by hours worked in
the day.


* 1910.1027 - Cadmium
========================
The employer shall assure that no employee is exposed to an airborne
concentration of cadmium in excess of five micrograms per cubic meter 
of air (5 ug/m(3)), calculated as an eight-hour time-weighted average 
exposure (TWA).


* 1910.1028 - Benzene.
=========================
The employer shall assure that no employee is exposed to an airborne 
concentration of benzene in excess of one part of benzene per million 
parts of air (1 ppm) as an 8-hour time-weighted average.

(2) Short-term exposure limit (STEL). The employer shall assure that 
no employee is exposed to an airborne concentration of benzene in 
excess of five (5) ppm as averaged over any 15 minute period.


* 1910.1029 - Coke oven emissions.
=====================================
The employer shall assure that no employee in the regulated area is
exposed to coke oven emissions at concentrations greater than 
150 micrograms per cubic meter of air (150 ug/m(3)), 
averaged over any 8-hour period.


* 1910.1043 - Cotton dust.
=============================
The employer shall assure that no employee who is exposed to cotton dust 
in yarn manufacturing and cotton washing operations is exposed to airborne 
concentrations of lint-free respirable cotton dust greater than 200 mg/m(3)
mean concentration, averaged over an eight-hour period, as measured 
by a vertical elutriator or an equivalent instrument.

The employer shall assure that no employee who is exposed to cotton dust 
in textile mill waste house operations or is exposed in yarn manufacturing
to dust from "lower grade washed cotton" as defined in paragraph (n)(5) of 
this section is exposed to airborne concentrations of lint-free respirable 
cotton dust greater than 500 mg/m(3) mean concentration,averaged over an 
eight-hour period, as measured by a vertical elutriator or an equivalent 
instrument.

The employer shall assure that no employee who is exposed to cotton dust 
in the textile processes known as slashing and weaving is exposed to 
airborne concentrations of lint-free respirable cotton dust greater 
than 750 mg/m(3) mean concentration, averaged over an eight hour period, 
as measured by a vertical elutriator or an equivalent instrument.


* 1910.1044 - 1,2-dibromo-3-chloropropane.
==========================================
The employer shall assure that no employee is exposed to an airborne 
concentration of DBCP in excess of 1 part DBCP per billion parts of 
air (ppb) as an 8-hour time-weighted average.

Dermal and eye exposure. The employer shall assure that no 
employee is exposed to eye or skin contact with DBCP


* 1910.1045 - Acrylonitrile
============================
Inhalation. (i) Time weighted average limit (TWA). The employer shall 
assure that no employee is exposed to an airborne concentration of 
acrylonitrile in excess of two (2) parts acrylonitrile per million 
parts of air (2 ppm) as an eight (8)-hour time-weighted average.

Ceiling limit. The employer shall assure that no employee is exposed 
to an airborne concentration of acrylonitrile in excess of ten (10) ppm 
as averaged over any fifteen (15)-minute period during the work day.


* 1910.1047 - Ethylene oxide.
==============================
The employer shall ensure that no employee is exposed to an airborne 
concentration of EtO in excess of one (1) part EtO per million parts of 
air (1 ppm) as an (8)-hour time-weighted average (8-hour TWA).

"Excursion limit." The employer shall ensure that no employee is exposed 
to an airborne concentration of EtO in excess of 5 parts of EtO per 
million parts of air (5 ppm) as averaged over a sampling period of 
fifteen (15) minutes.


* 1910.1048 - Formaldehyde.
============================
The employer shall assure that no employee is exposed to an airborne 
concentration of formaldehyde which exceeds 0.75 parts formaldehyde per 
million parts of air (0.75 ppm) as an 8-hour TWA.

The employer shall assure that no employee is exposed to an airborne 
concentration of formaldehyde which exceeds two parts formaldehyde per
million parts of air (2 ppm) as a 15-minute STEL.


* 1910.1050 - Methylenedianiline
=================================
The employer shall assure that no employee is exposed to an airborne 
concentration of MDA in excess of ten parts per billion (10 ppb) as 
an 8-hour time-weighted average or a STEL of 100 ppb.


* 1910.1051 - 1.3-Butadiene.
================================
The employer shall ensure that no employee is exposed to an airborne 
concentration of BD in excess of one (1) part BD per million parts of 
air (ppm) measured as an eight (8)-hour time-weighted average.

The employer shall ensure that no employee is exposed to an airborne 
concentration of BD in excess of five parts of BD per million parts of 
air (5 ppm) as determined over a sampling period of fifteen (15) minutes.


* 1910.1052 - Methylene Chloride.
===================================
The employer shall ensure that no employee is exposed to an airborne 
concentration of MC in excess of twenty-five parts of MC per million 
parts of air (25 ppm) as an 8-hour TWA.

Short-term exposure limit (STEL). The employer shall ensure that no 
employee is exposed to an airborne concentration of MC in excess of 
one hundred and twenty-five parts of MC per million parts of air (125 ppm) 
as determined over a sampling period of fifteen minutes.