Histidine hydrochloride

Modify Date: 2026-07-08 14:08:06

Histidine hydrochloride structure	Common Name	Histidine hydrochloride
	CAS Number	645-35-2	Molecular Weight	191.615
	Density	N/A	Boiling Point	458.9ºC at 760 mmHg
	Molecular Formula	C₆H₁₀ClN₃O₂	Melting Point	N/A
	MSDS	N/A	Flash Point	231.3ºC

Name	(S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid hydrochloride
Synonym	More Synonyms

Boiling Point	458.9ºC at 760 mmHg
Molecular Formula	C₆H₁₀ClN₃O₂
Molecular Weight	191.615
Flash Point	231.3ºC
Exact Mass	191.046158
PSA	92.00000
LogP	0.86640
InChIKey	QZNNVYOVQUKYSC-JEDNCBNOSA-N
SMILES	Cl.NC(Cc1cnc[nH]1)C(=O)O
Storage condition	2-8°C

Histidine hydrochloride MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: MS3116100

CHEMICAL NAME :: Histidine, monohydrochloride, L-

CAS REGISTRY NUMBER :: 645-35-2

LAST UPDATED :: 199706

DATA ITEMS CITED :: 5

MOLECULAR FORMULA :: C6-H9-N3-O2.Cl-H

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4407 mg/kg

TOXIC EFFECTS :: Behavioral - altered sleep time (including change in righting reflex) Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease

REFERENCE :: ABBIA4 Archives of Biochemistry and Biophysics. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.31- 1951- Volume(issue)/page/year: 64,319,1956 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 697 gm/kg/2Y-C

TOXIC EFFECTS :: Lungs, Thorax, or Respiration - changes in lung weight Blood - pigmented or nucleated red blood cells Blood - changes in erythrocyte (RBC) count

REFERENCE :: FCTOD7 Food and Chemical Toxicology. (Pergamon Press Inc., Maxwell House, Fairview Park, Elmsford, NY 10523) V.20- 1982- Volume(issue)/page/year: 34,687,1996 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 82261 No. of Facilities: 59 (estimated) No. of Industries: 3 No. of Occupations: 3 No. of Employees: 744 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 82261 No. of Facilities: 196 (estimated) No. of Industries: 1 No. of Occupations: 5 No. of Employees: 2601 (estimated) No. of Female Employees: 1791 (estimated)

Personal Protective Equipment	Eyeshields;Gloves
Hazard Codes	Xi
RIDADR	UN 1789
WGK Germany	2
HS Code	2922499990

dl-histidine mo...

CAS#:6459-59-2

~29%

Histidine hydro...

CAS#:645-35-2

Learn More

Literature: Weissbuch, I.; Zbaida, D.; Addadi, L.; Leiserowitz, L.; Lahav, M. Journal of the American Chemical Society, 1987 , vol. 109, # 6 p. 1869 - 1871

L-Histidine

CAS#:71-00-1

Histidine hydro...

CAS#:645-35-2

Learn More

Literature: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, , vol. 75, # 1 p. 293 - 298

dl-histidine mo...

CAS#:6459-59-2

Histidine hydro...

CAS#:645-35-2

D-Histidine hyd...

CAS#:6341-24-8

Learn More

Literature: Molecular Crystals and Liquid Crystals (1969-1991), , vol. 161, p. 199 - 222

HS Code	2922499990
Summary	HS:2922499990 other amino-acids, other than those containing more than one kind of oxygen function, and their esters; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) MFN tariff:6.5% General tariff:30.0%

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Histidine, hydrochloride (1:1)

L-Histidine, monohydrochloride

Histidine hydrochloride (VAN)

Histidine hydrochloride (1:1)

L-Histidine hydrochloride

l-Histidine.HCl

EINECS 211-438-9

MFCD00064556

L-Histidine hydrochloride (VAN)

(-)-HISTIDINE MONOHYDROCHLORIDE

Histidine, monohydrochloride

Histidine hydrochloride

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Histidine hydrochloride
Price: Check
Purity: 98.0%
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: L-Histidine hydrochloride
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
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Henan Tianfu Chemical Co., Ltd.
China
Product Name: Factory price CAS 645-35-2 L-Histidine hydrochloride in stock
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Histidine hydrochloride
Price: ￥Inquiry/25kg
Purity: 99.0%
Delivery: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

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Histidine hydrochloride

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MSDS

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CHEMICAL IDENTIFICATION

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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