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Home> Hot Product Listed L   > L-Cysteine hydrochloride monohydrate
7048-04-6 structure

L-Cysteine hydrochloride monohydrate

CAS No.:7048-04-6
EINECS(EC#): 200-157-7
Molecular Weight:121.15818
Molecular Formula:C3H7NO2S (isomer)
Names and Identifiers
Synonyms

Cysteine,hydrochloride, monohydrate, L- (8CI) L-Cysteine, hydrochloride, monohydrate(9CI)

Inchi
InChI=1/C3H7NO2S.ClH.H2O/c4-2(1-7)3(5)6;;/h2,7H,1,4H2,(H,5,6);1H;1H2/t2-;;/m0../s1
InChkey
XUJNEKJLAYXESH-REOHCLBHSA-N
Canonical Smiles
C(C(C(=O)O)N)S
Isomers Smiles
C([C@@H](C(=O)O)N)S
Properties
Appearance
white crystalline powder
Melting Point
175°C
Boiling Point
293.9 oC at 760 mmHg
Refractive Index
6 ° (C=8, 1mol/L HCl)
Flash Point
131.5 oC
Solubility
H2O: 1 M at 20 oC, clear, colorless
Color/Form
Colorless crystals
White crystals
Stability
Stable. Incompatible with strong oxidizing agents, most common metals, hydrogen chloride.
HS Code
29309013
Storage temp
Store at RT.
Spectral properties
Specific optical rotation: + 6.5 deg @ 25 deg C/D (5 N HCl); +13.0 deg @ 25 deg C/D (glacial acetic acid)
Specific optical rotation: +9.7 deg C (c=8 in 1M HCL) @ 25 deg C/D
MASS: NIST 63547 (NIST/EPA/MCDC Mass Spectral Database 1990 version)
IR: SADP 13419 (Sadtler Research Laboratories IR prism collection)
UV: OES 2-10 (Phillip et al; Organic Electronic Spectral Data. NT, NY: John Wiley and Sons)
1H NMR: SAD 16992 (Sadtler Research Laboratories spectral collection)
Safety and Handling
Hazard Codes
Xi
Risk Statements
R36/37/38
Safety Statements
S26
Safety
Hazard Codes:Xi
Risk Statements:36/37/38
36/37/38:Irritating to eyes, respiratory system and skin
Safety Statements:26-36
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:Wear suitable protective clothing
WGK Germany:3
HS Code:29309013
Sensitive
Hygroscopic
Formulations/Preparations
...occurs naturally in the L(+) form. ... Available commercially as L(+)-cysteine hydrochloride.
Exposure Standards and Regulations
Cysteine used as a nutrient and/or dietary supplement in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.
Substance added directly to human food affirmed as generally recognized as safe (GRAS).
L-Cysteine is a food additive permitted for direct addition to food for human consumption, as long as 1) the quantity of the substance added to food does not exceed the amount reasonably required to accomplish its intended physical, nutritive, or other technical effect in food, and 2) any substance intended for use in or on food is of appropriate food grade and is prepared and handled as a food ingredient.
Specification

white crystalline powder
Safety Statements:26-36
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:Wear suitable protective clothing
Octanol/Water Partition Coefficient
log Kow = -2.49
Disposal Methods
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.
Reach Info
This substance has been officially registered by enterprises.
ECHA (EU chemicals Management Agency) published the completed registration file as follows:
Completed registration file:
Registered as ubmitted Total tonnage band  
INTERMEDIATE JOINT INTERMEDIATE_USE_ONLY view >
Registered companies:
Registrant / Supplier details Latest dossier received
F.I.S. Fabbrica Italiana Sintetici S.p.a. 2013
MOEHS BCN, S.L. 2017
MOEHS CANTABRA 2017
more >
MSDS

2.Hazard identification

2.1 Classification of the substance or mixture

Skin irritation, Category 2

Eye irritation, Category 2

Specific target organ toxicity \u2013 single exposure, Category 3

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Warning

Hazard statement(s)

H315 Causes skin irritation

H319 Causes serious eye irritation

H335 May cause respiratory irritation

Precautionary statement(s)
Prevention

P264 Wash ... thoroughly after handling.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P271 Use only outdoors or in a well-ventilated area.

Response

P302+P352 IF ON SKIN: Wash with plenty of water/...

P321 Specific treatment (see ... on this label).

P332+P313 If skin irritation occurs: Get medical advice/attention.

P362+P364 Take off contaminated clothing and wash it before reuse.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P337+P313 If eye irritation persists: Get medical advice/attention.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P312 Call a POISON CENTER/doctor/\u2026if you feel unwell.

Storage

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

P405 Store locked up.

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

Precursor and Product
product :
921-01-7
921-01-7
Computational chemical data
  • Molecular Weight:121.15818g/mol
  • Molecular Formula:C3H7NO2S
  • XLogP3-AA:_2.5
  • Exact Mass:121.019749
  • Monoisotopic Mass:121.019749
  • Complexity:75.3
  • Rotatable Bond Count:2
  • Hydrogen Bond Donor Count:3
  • Hydrogen Bond Acceptor Count:4
  • Topological Polar Surface Area:64.3
  • Heavy Atom Count:7
  • Defined Atom Stereocenter Count:1
  • Undefined Atom Stereocenter Count:0
  • Defined Bond Stereocenter Count:0
  • Undefined Bond Stereocenter Count:0
  • Isotope Atom Count:0
  • Covalently-Bonded Unit Count:1
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