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2103 Modem Module
Appendix C Material Safety Data Sheets
C-7
Section 11 – Toxicological Information
This product and its components are not listed on the NTP or OSHA Carcinogen lists.
Animal Toxicology Tests for DOT Hazard classification
( Tests Conducted on finely ground silica gel)
1 - hour LC
50
(rat) > 2 mg / l
48 - hour oral LD
50
(rat) est. > 31,600 mg / kg
48 - hour dermal LD
50
(rabbit) est. > 2,000 mg / kg
Considered an ocular irritant
Human Toxicology Silica gel is a synthetic amorphous silica not to be confused with crystalline silica.
Epidemiological studies indicate low potential for adverse health effects. In the activated form, silica gel
acts as a desiccant and can cause a drying irritation of the mucous membranes and skin in cases of severe
exposure. Multisorb Technologies Inc. knows of no medical conditions that are abnormally aggravated by
exposure to silica gel. The primary route of entry is inhalation of dust.
Section 12 – Ecological Information
Not known to have any adverse effect on the aquatic environment. Silica gel is insoluble and non-toxic.
Section 13 – Disposal Information
Disposal Information If this product as supplied becomes a waste, it does not meet the criteria of a
hazardous waste as defined under the Resource Conservation and Recovery Act (RCRA) 40 CFR 261.
Materials of a hazardous nature that contact the product during normal use may be retained on the product.
The user of the product must identify the hazards associated with the retained material in order to assess the
waste disposal options. Dispose according to federal, state and local regulations.
Section 14 – Transportation Information
U.S. Department of Transportation Shipping Name:
Not classified as a hazardous material. Not regulated.
Section 15 – Regulatory Information (Not meant to be all inclusive - selected regulations represented)
TSCA Listed:
Yes
DSL/NDSL (Canadian) Listed:
Yes
OSHA:
TWA 20 mppcf (80 mg / m
3
% SiO
2
) for Silica gel
NIOSH:
REL TWA 6 mg / m
3
IDLH 3,000 mg / m
3
for silica gel
Animal tests conducted in 1976 - 1978. 18 month exposure at 15 mg / m
3
showed silica
deposition in respiratory macrophages and lymph nodes, minimum lung impairment, no silicosis.
ACGIH:
TLV - 10 mg / m
3
for Silica gel
DOT:
Not classified as a hazardous material.