L-Cysteine
Product identifier
- Product name: L-Cysteine
- CBnumber: CB7388480
- CAS: 52-90-4
- EINECS Number: 200-158-2
- Synonyms: L-Cysteine,Cys
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
- Uses advised against: none
Company Identification
- Company: Chemicalbook
- Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
- Telephone: 400-158-6606
GHS Label elements, including precautionary statements
-
Symbol(GHS)
- Signal wordWarning
Substance
- Product name: L-Cysteine
- Synonyms: L-Cysteine,Cys
- CAS: 52-90-4
- EC number: 200-158-2
- MF: C3H7NO2S
- MW: 121.16
Description of first aid measures
If inhaledMost important symptoms and effects, both acute and delayed
Indication of any immediate medical attention and special treatment needed
Extinguishing media
Suitable extinguishing mediaSpecial hazards arising from the substance or mixture
Carbon oxides, Nitrogen oxides (NOx), Sulphur oxides
Advice for firefighters
Wear self-contained breathing apparatus for firefighting if necessary.
Further information
No data available
NFPA 704
| HEALTH | 0 | Poses no health hazard, no precautions necessary and would offer no hazard beyond that of ordinary combustible materials | |
| FIRE | 0 | Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Materials that will not burn in air when exposed to a temperature of 820 °C (1,500 °F) for a period of 5 minutes.(e.g. Carbon tetrachloride) | |
| REACT | 1 | Normally stable, but can become unstable at elevated temperatures and pressures (e.g. propene) | |
| SPEC. HAZ. |
Personal precautions, protective equipment and emergency procedures
Avoid dust formation. Avoid breathing vapours, mist or gas. For personal protection see section 8.
Environmental precautions
No special environmental precautions required.
Methods and materials for containment and cleaning up
Sweep up and shovel. Keep in suitable, closed containers for disposal.
Reference to other sections
For disposal see section 13.
Precautions for safe handling
Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.
Conditions for safe storage, including any incompatibilities
Keep container tightly closed in a dry and well-ventilated place. Store in cool place. Store under inert gas. Air sensitive.
Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are stipulated
control parameter
Hazard composition and occupational exposure limitsExposure controls
Appropriate engineering controlsGeneral industrial hygiene practice.
Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.
The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.
Full contact
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm Break through time: 480 min
Material tested:Dermatril? (KCL 740 / Aldrich Z677272, Size M)
Splash contact Material: Nitrile rubber
Minimum layer thickness: 0,11 mm Break through time: 480 min
Material tested:Dermatril? (KCL 740 / Aldrich Z677272, Size M)
data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail sales@kcl.de, test method: EN374
If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario.
Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place., The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.
Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).
No special environmental precautions required.
Information on basic physicochemical properties
- Appearance solid
- OdourNo data available
- Odour ThresholdNo data available
- pH4.5-5.5 (100g/l, H2O, 20℃)
- Melting point/freezing pointMelting point/range: 240 °C - dec.
- Initial boiling point and boiling range293.9±35.0 °C(Predicted)
- Flash pointNo data available
- Evaporation rateNo data available
- Flammability (solid, gas)The product is not flammable. - Flammability (solids)
- Upper/lower flammability or explosive limitsNo data available
- Vapour pressureNo data available
- Vapour densityNo data available
- Relative densityNo data available
- Water solubilitysoluble
- Partition coefficient: n-octanol/waterlog Pow: -3,05 - Bioaccumulation is not expected., (ECHA)
- Autoignition temperature292 °C - Relative self-ignition temperature for solids
- Decomposition temperature>203 °C -
- ViscosityNo data available
- Explosive propertiesNo data available
- Oxidizing propertiesNo data available
- λmaxλ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.2
Other safety information
No data available
Reactivity
No data available
Chemical stability
Stable under recommended storage conditions.
Possibility of hazardous reactions
No data available
Conditions to avoid
No data available
Incompatible materials
Strong oxidizing agents
Hazardous decomposition products
Hazardous decomposition products formed under fire conditions. - Carbon oxides, Nitrogen oxides (NOx), Sulphur oxides
Other decomposition products - No data available In the event of fire: see section 5
Information on toxicological effects
Acute toxicityLD50 Dermal - Rat - male and female - > 2.000 mg/kg (OECD Test Guideline 402)
Result: No skin irritation - 4 h (OECD Test Guideline 404)
Result: No eye irritation (OECD Test Guideline 405)
Result: negative
(OECD Test Guideline 429)
Mutagenicity (mammal cell test): chromosome aberration. Chinese hamster fibroblasts
Result: negative
In vitro mammalian cell gene mutation test Chinese hamster fibroblasts
Result: negative Ames test
Salmonella typhimurium Result: negative
Mouse - male Result: negative (ECHA)
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.
After absorption of toxic quantities:
Systemic effects:
somnolence, depressed respiration, ataxia (impaired locomotor coordination) This is a non-essential amino acid that occurs in many forms in natural protein. Other dangerous properties can not be excluded.
Handle in accordance with good industrial hygiene and safety practice.
Toxicity
Toxicity to daphnia and other aquatic
semi-static test EC50 - Daphnia magna (Water flea) - > 100 mg/l - 48 h
invertebrates (OECD Test Guideline 202)
(OECD Test Guideline 201)
static test NOEC - Pseudokirchneriella subcapitata (green algae) - > 100 mg/l - 72 h
(OECD Test Guideline 201)
Persistence and degradability
Biodegradability aerobic - Exposure time 28 d
Result: 98 % - Readily biodegradable. (OECD Test Guideline 301A)
Bioaccumulative potential
No data available
Mobility in soil
No data available
Results of PBT and vPvB assessment
This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.
Other adverse effects
No data available
Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Contaminated packaging
Dispose of as unused product.
UN number
ADR/RID: - IMDG: - IATA: -
UN proper shipping name
Transport hazard class(es)
ADR/RID: - IMDG: - IATA: -
Packaging group
ADR/RID: - IMDG: - IATA: -
Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
Special precautions for user
No data available
Safety, health and environmental regulations/legislation specific for the substance or mixture
Regulations on the Safety Management of Hazardous ChemicalsAbbreviations and acronyms
- CAS: Chemical Abstracts Service
- ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
- RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
- IMDG: International Maritime Dangerous Goods
- IATA: International Air Transportation Association
- TWA: Time Weighted Average
- STEL: Short term exposure limit
- LC50: Lethal Concentration 50%
- LD50: Lethal Dose 50%
- EC50: Effective Concentration 50%
References
【1】CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
【2】ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
【3】ECHA - European Chemicals Agency, website: https://echa.europa.eu/
【4】eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
【5】ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
【6】Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
【7】HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
【8】IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
【9】IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
【10】Sigma-Aldrich, website: https://www.sigmaaldrich.com/
The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.