Chemical Name: DL-Histidine
Molecular Formula: C6H9N3O2
Molecular Weight: 155.15
InChI Key: HNDVDQJCIGZPNO-UHFFFAOYSA-N
InChI: InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)

Product pricing and availability information
Assay	Pack Size	Price	Stock
98%	1g	N/A	N/A
98%	5g	N/A	N/A
98%	Bulk Quantity	N/A	N/A

Product_Name:	DL-Histidine
Flash_Point:	231.3±25.9 °C
Melting_Point:	280-290ºC (dec.)
FW:	191.615
Density:	1.4±0.1 g/cm3
CAS:	4998-57-6
Bolling_Point:	458.9±35.0 °C at 760 mmHg
MF:	C6H10ClN3O2

Molecular_Structure:	['1 . Molar refractive index 3801 ', '2 . Molar volume （m3/mol）1089 ', '3 . Parachor （902K）3256 ', '4 . Surface tension 796 ', '5 . Polarizability （10 -24cm 3）1507']
Flash_Point:	231.3±25.9 °C
Refractive_Index:	1.615
FW:	191.615
Density:	1.4±0.1 g/cm3
Bolling_Point:	458.9±35.0 °C at 760 mmHg
Computational_Chemistry:	['1. XlogP :-32 ', '2. Hydrogen Bond Donor Count :3 ', '3. Hydrogen Bond Acceptor Count :4 ', '4. Rotatable Bond Count :3 ', '5. Isotope Atom Count :2 ', '6. TPSA 92 ', '7. Heavy Atom Count :11 ', '8. Topological Polar Surface Area :0 ', '9. Complexity :151 ', '10. Isotope Atom Count :0 ', '11. Defined Atom Stereocenter Count :0 ', '12. Undefined Atom Stereocenter Count :1 ', '13. Defined Bond Stereocenter Count :0 ', '14. Undefined Bond Stereocenter Count :0 ', '15. Covalently-Bonded Unit Count :1']
LogP:	-1.26
Melting_Point:	280-290ºC (dec.)
PSA:	92.00000
MF:	C6H10ClN3O2
More_Info:	['1 . Appearance Colourless 片状or 四方棱柱状结晶 ', '2 . Density（g/mL）不确定 ', '3 . Relative vapor density（g/mL,Atmosphere =1）不确定 ', '4 . Melting point（ºC）233 ', '5 . Boiling point（ºC,Atmospheric pressure）不确定 ', '6 . Boiling point（ºC,1mmHg）不确定 ', '7 . Refractive index（nD20）不确定 ', '8 . Flash point（ºC）不确定 ', '9 . Specific rotation（º）143-152 ', '10 . Spontaneous ignition point or ignition temperature（ºC）不确定 ', '11 . Vapor pressure（kPa,25ºC）不确定 ', '12 . Saturated vapor pressure（kPa,60ºC）不确定 ', '13 . Combustion heat（KJ/mol）不确定 ', '14 . Critical temperature（ºC）不确定 ', '15 . Critical pressure（KPa）不确定 ', '16 . Oil-water（Octanol /Water ）Logarithmic Value of Distribution Coefficient 不确定 ', '17 . Upper limit of explosion（%,V/V）不确定 ', '18 . Lower limit of explosion（%,V/V）不确定 ', '19 . Solubility Soluble in Water ，Insoluble in Ethanol Ethyl ether 丙酮and 氯仿']
Vapor_Pressure:	0.0±1.2 mmHg at 25°C
Exact_Mass:	191.046158

Personal_Protective_Equipment:	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Risk_Statements(EU):	R22
RIDADR:	NONH for all modes of transport
HS_Code:	2933290090
WGK_Germany:	3
Safety_Statements:	S22-S24/25