NILE
CHEMICALS
NILE
CHEMICALS
Synonyms: Sodium thiosulfate
CAS No.: 7772-98-7 (Anhydrous) 10102-17-7 (Pentahydrate)
Molecular Weight: 248.17
Chemical Formula: Na2S2O3.5H2O
Product Codes: 972
Ingredient CAS No Percent Hazardous
------------------ ------------ ------------ ---------
Sodium Thiosulfate 7772-98-7 100% Yes
Inhalation: May cause irritation to the respiratory tract. Symptoms may
include coughing and shortness of breath.
Ingestion: Low level of toxicity by ingestion. Diarrhea may occur by
ingestion of large quantities.
Skin Contact: Irritation may occur from prolonged skin contact.
Eye Contact: Contact may cause mechanical irritation.
Chronic Exposure: Chronic exposure may cause skin effects.
Aggravation of Pre-existing Conditions: No information found.
Inhalation: Remove to fresh air. Get medical
attention for any breathing difficulty.
Ingestion: Induce vomiting immediately as directed by medical personnel.
Never give anything by mouth to an unconscious person. Get medical attention.
Skin Contact: Wash exposed area with soap and water. Get medical advice
if irritation develops.
Eye Contact: Wash thoroughly with running water. Get medical advice if
irritation develops.
Fire: Not considered to be a fire hazard.
Explosion: Not considered to be an explosion hazard.
Fire Extinguishing Media: Use any means suitable for extinguishing
surrounding fire.
Special Information: Use protective clothing and breathing equipment
appropriate for the surrounding fire.
Ventilate area of leak or spill. Wear appropriate personal protective equipment as specified in Section 8
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage. Isolate from incompatible substances. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Airborne Exposure Limits: None established.
Ventilation System: In general, dilution ventilation is a satisfactory
health hazard control for this substance. However, if conditions of use create
discomfort to the worker, a local exhaust system should be considered.
Personal Respirators (NIOSH Approved): For conditions of use where
exposure to dust or mist is apparent and engineering controls are not feasible,
a particulate respirator (NIOSH type N95 or better filters) may be worn. If oil
particles (e.g. lubricants, cutting fluids, glycerine, etc.) are present, use a
NIOSH type R or P filter. For emergencies or instances where the exposure levels
are not known, use a full-face positive-pressure, air-supplied respirator.
WARNING: Air-purifying respirators do not protect workers in oxygen-deficient
atmospheres.
Skin Protection: Wear protective gloves and clean body-covering clothing.
Eye Protection: Safety glasses. Maintain eye wash fountain and
quick-drench facilities in work area.
Appearance: Monoclinic, colorless crystals.
Odor: Odorless.
Solubility: 79g/100 ml water @ 4C (39F)
Density: 1.75
pH: No information found.
% Volatiles by volume @ 21C (70F): 0
Boiling Point: > 100C (> 212F)
Melting Point: 48C (118F) Loses water @ 100C (212F)
Vapor Density (Air=1): No information found.
Vapor Pressure (mm Hg): No information found.
Evaporation Rate (BuAc=1): No information found.
Stability: Stable under ordinary conditions of use
and storage. Stability limited in solution.
Hazardous Decomposition Products: Oxides of sulfur and hydrogen sulfide.
Hazardous Polymerization: Will not occur.
Incompatibilities: Sodium nitrate, halogens, and oxidizing agents. Reacts
with acids to release sulfur dioxide.
Conditions to Avoid: Incompatibles.
No LD50/LC50 information found relating to normal routes of occupational exposure.
--------\Cancer Lists\------------------------------------------------------
---NTP Carcinogen---
Ingredient Known Anticipated IARC Category
------------------------------------ ----- ----------- -------------
Sodium Thiosulfate (7772-98-7) No No None
Environmental Fate: No information found.
Environmental Toxicity: No information found.
Whatever cannot be saved for recovery or recycling should be managed in an appropriate and approved waste disposal facility. Processing, use or contamination of this product may change the waste management options. State and local disposal regulations may differ from federal disposal regulations. Dispose of container and unused contents in accordance with federal, state and local requirements.
Not regulated.
--------\Chemical Inventory Status - Part 1\---------------------------------
Ingredient TSCA EC Japan Australia
----------------------------------------------- ---- --- ----- ---------
Sodium Thiosulfate (7772-98-7) Yes Yes Yes Yes
--------\Chemical Inventory Status - Part 2\---------------------------------
--Canada--
Ingredient Korea DSL NDSL Phil.
----------------------------------------------- ----- --- ---- -----
Sodium Thiosulfate (7772-98-7) Yes Yes No Yes
--------\Federal, State & International Regulations - Part 1\----------------
-SARA 302- ------SARA 313------
Ingredient RQ TPQ List Chemical Catg.
----------------------------------------- --- ----- ---- --------------
Sodium Thiosulfate (7772-98-7) No No No No
--------\Federal, State & International Regulations - Part 2\----------------
-RCRA- -TSCA-
Ingredient CERCLA 261.33 8(d)
----------------------------------------- ------ ------ ------
Sodium Thiosulfate (7772-98-7) No No No
Chemical Weapons Convention: No TSCA 12(b): No CDTA: No
SARA 311/312: Acute: Yes Chronic: No Fire: No Pressure: No
Reactivity: No (Pure / Solid)
Australian Hazchem Code: None allocated.
Poison Schedule: None allocated.
WHMIS: This MSDS has been prepared according to the hazard criteria of
the Controlled Products Regulations (CPR) and the MSDS contains all of the
information required by the CPR.
Disclaimer: Nile Chemicals. provides the
information contained herein in good faith but makes no representation as to its
comprehensiveness or accuracy. This document is intended only as a guide to the
appropriate precautionary handling of the material by a properly trained person
using this product. Individuals receiving the information must exercise their
independent judgment in determining its appropriateness for a particular
purpose. NILE CHEMICALS. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS
OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH
HEREIN OR THE PRODUCT TO WHICH THE INFORMATION REFERS. ACCORDINGLY, NILE
CHEMICALS. WILL NOT BE RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF OR RELIANCE
UPON THIS INFORMATION.
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