Section 3- Hazards Identification
EMERGENCY OVERVIEW
Appearance: white crystalline powder.
Caution! May cause respiratory tract irritation. May be absorbed through intact skin. May cause
eye and skin irritation.
Target Organs: No data found.
Target Organs: None known.
Potential Health Effects
Eye: May cause eye irritation.
Skin: May cause skin irritation. Low hazard for usual industrial handling. May be absorbed
through the skin.
Ingestion: Ingestion of large amounts may cause gastrointestinal irritation. Low hazard for
usual industrial handling.
Inhalation: May cause respiratory tract irritation. Low hazard for usual industrial handling.
Chronic: No information found.
Section 1 - Chemical Product and CompanySection 4 - First Aid Measures
Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and
lower eyelids. Get medical aid.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing
contaminated clothing and shoes. Wash clothing before reuse.
Ingestion: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT
induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give
artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician: Treat symptomatically and supportively.
Section 5 - Fire Fighting Measures
General Information: As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire,
irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media: Use agent most appropriate to extinguish fire. Use water spray, dry
chemical, carbon dioxide, or appropriate foam.
Flash Point: Not applicable.
Autoignition Temperature: Not available.
Upper: Not available.
NFPA Rating: (estimated) Health: 1; Flammability: 0; Instability: 0
Section 6 - Accidental Release Measures
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean
up spills immediately, observing precautions in the Protective Equipment section. Avoid
generating dusty conditions. Provide ventilation.
Section 7 - Handling and Storage
Handling: Wash thoroughly after handling. Use with adequate ventilation. Minimize dust
generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly
closed. Avoid ingestion and inhalation.
Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from
incompatible substances.Section 8 - Exposure Controls, Personal Protection
Engineering Controls: Use adequate ventilation to keep airborne concentrations low.
Exposure Limits
Chemical Name
ACGIH
NIOSH
OSHA - Final PELs
L-Cysteine Hydrochloride
Monohydrate
none listed
none listed
none listed
OSHA Vacated PELs: L-Cysteine Hcl MONO : No OSHA Vacated PELs are listed for this chemical.
Personal Protective Equipment
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by
OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European
Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if
exposure limits are exceeded or if irritation or other symptoms are experienced.
Section 9 - Physical and Chemical Properties
Physical State: Crystalline powder
Appearance: white
Odor: none reported .
pH: (1% soln/water.)：1.5~2.0[Acidic].
Vapor Pressure: Negligible.
Vapor Density: Not available.
Evaporation Rate: Negligible.
Viscosity: Not available.
Boiling Point: Not available.
Decomposition Temperature: 175-177.8 deg C
Solubility: (H2O，g/100g)： about 110 (20°)
Molecular Formula: C3 H7 NO2S HCl H2O
10 - Stability
Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials, dust generation, excess heat.
Incompatibilities with Other Materials: Alkalies, strong oxidizing agents.
Hazardous Decomposition Products: Hydrogen chloride, chlorine, nitrogen oxides, carbon
Section and Reactivitymonoxide, carbon monoxide, carbon dioxide, ethyl alcohol.
Hazardous Polymerization: Will not occur.
Section 11 - Toxicological Information
RTECS#:
CAS# 7048-04-6 :
LD50/LC50:
Not available.
Carcinogenicity:
CAS# 7048-04-6 : Not listed by ACGIH, IARC, NTP, or CA Prop 65.
Epidemiology: No information available.
Teratogenicity: No information available.
Reproductive Effects: No information available.
Mutagenicity: No information available.
Neurotoxicity: No information available.
Other Studies:
Section 12 - Ecological Information
Ecotoxicity: Not available.
BOD5 and COD: Not available.
Products of Biodegradation:
Possibly hazardous short term degradation products are not likely. However, long term
degradation products may arise.
Toxicity of the Products of Biodegradation: The product itself and its products of
degradation are not toxic. Special Remarks on the Products of Biodegradation: Not available.
Section 13 - Disposal Considerations
Chemical waste generators must determine whether a discarded chemical is classified as a
hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR
Parts 261.3. Additionally, waste generators must consult state and local hazardous waste
regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.Section 14 - Transport Information
US DOT
Canada TDG
Shipping Name:
Not Regulated
Not Regulated
Hazard Class:
UN Number:
Packing Group:
Transport IMDG
The product is not subject to IMDG regulations.
Section 15 - Regulatory Information
US FEDERAL
TSCA
CAS# 7048-04-6 is listed on the TSCA inventory.
Health & Safety Reporting List
None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
None of the chemicals in this material have an RQ.
SARA Section 302 Extremely Hazardous Substances
None of the chemicals in this product have a TPQ.
Section 313
No chemicals are reportable under Section 313.
Clean Air Act:
This material does not contain any hazardous air pollutants.
This material does not contain any Class 1 Ozone depletors.
This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
None of the chemicals in this product are listed as Hazardous Substances under the CWA.
None of the chemicals in this product are listed as Priority Pollutants under the CWA.
None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
OSHA:
None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
CAS# 7048-04-6 is not present on state lists from CA, PA, MN, MA, FL, or NJ.California Prop 65
California No Significant Risk Level: None of the chemicals in this product are listed.
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols:
Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
S 28A After contact with skin, wash immediately with plenty of water
.
WGK (Water Danger/Protection)
CAS# 7048-04-6 : 0
Canada - DSL/NDSL
CAS# 7048-04-6 is listed on Canada's DSL List.
Canada - WHMIS
WHMIS: Not available.
This product has been classified in accordance with the hazard criteria of the Controlled Products
Regulations and the MSDS contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
Section 16 - Additional Information
MSDS Creation Date: 07/01/2015
Revision #4 Date: 08/15/2021
The information above is believed to be accurate and represents the best information currently
available to us. However, we make no warranty of merchantability or any other warranty,
express or implied, with respect to such information, and we assume no liability resulting from
its use. Users should make their own investigations to determine the suitability of the
information for their particular purposes. In no event shall we be liable for any claims, losses, or
damages of any third party or for lost profits or any special, indirect, incidental, consequential or
exemplary damages, howsoever arising, even if the possibility of such damages has been
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