CHLORZOXAZONE

PRODUCT IDENTIFICATION
CAS NO. 95-25-0

CHLORZOXAZONE
EINECS NO. 202-403-9
FORMULA C7H4ClNO2
MOL WT. 169.57

H.S. CODE

  

TOXICITY

  
SYNONYMS 5-Chloro-2-benzoxazolone; Paraflex; Parafon forte DSC;
5-Chloro-2(3H)-benzoxazolone; 5-Chloro-2-hydroxybenzoxazole;
DERIVATION

 

CLASSIFICATION

  

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE white to off-white crystalline powder
MELTING POINT 191 - 192  C
BOILING POINT

 
SPECIFIC GRAVITY

 
SOLUBILITY IN WATER  
pH  
VAPOR DENSITY

 

AUTOIGNITION

 

NFPA RATINGS

 Health: 2; Flammability: 1; Reactivity: 0 

REFRACTIVE INDEX

 
FLASH POINT

 
STABILITY

Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS
Skeletal muscle relaxants are a heterogeneous medications used to treat two types including antispastics in the treatment of multiple sclerosis, spinal cord diseases (Class A), and cerebral palsy and for the symptomatic management of acute, painful musculoskeletal disorders (Class B).
  • Class A
    • Baclofen [CAS #: 1134-47-0]
    • Dantrolene [CAS #: 7261-97-4]
    • Tizanidine [CAS #: 51322-75-9], Tizanidine hydrochloride [CAS #: 64461-82-1]
  • Class B
    • Carisoprodol [CAS #: 78-44-4]
    • Chlorzoxazone [CAS #: 95-25-0]
    • Cyclobenzaprine [CAS #: 303-53-7]
    • Metaxalone [CAS #: 1665-48-1]
    • Methocarbamol [CAS #: 532-03-6]
    • Orphenadrine [CAS #: 83-98-7], Orphenadrine hydrochloride [CAS #: 341-69-5]
SALES SPECIFICATION

APPEARANCE

 white to off-white crystalline powder

ASSAY
98.0% - 102.0%

MELTING POINT

190 - 193 C

RESIDUE ON IGNITION

0.5% min

HEAVY METALS

20ppm max

LOSS ON DRYING

0.5% max
TRANSPORTATION
PACKING

 
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 22-36/37/38, Safety Phrases: 26-36