Melting point : -20 °C 
Boiling point : 103 °C20 mm Hg(lit.)
density : 1.212 g/mL at 20 °C
vapor density : 1 (vs air)
vapor pressure : 1.39 psi ( 20 °C)
refractive index : n20/D 1.519(lit.)
Fp : 197 °F
storage temp. : 2-8°C
Water Solubility : decomposes
Sensitive : Moisture Sensitive
Chemical Properties:light yellow liquid
General Description:A colorless liquid with an acrid odor. Vapors irritate eyes and mucous membranes. Corrosive to metals and tissue. Long-term inhalation of low concentrations or short-term inhalation of high concentrations can result in adverse health effects.

Product Name:1,8-Naphthalic anhydride(81-84-5):

Molecular formula C12H6O3
Formula Weight:198.17
Density:1.449 g/cm3
Melting Point:269 °C
Boiling Point:407.5 °C at 760 mmHg
Refractive Index:1.712
Flash Point: 206.8 °C
Water Solubility: decomposes
Sensitive: Moisture Sensitive
Appearance:beige to light brown powder
Product Categories: Intermediates of Dyes and Pigments;Oxygen cyclic compounds;Naphthalene derivatives
Synonyms of 1,8-Naphthalic anhydride(81-84-5):1,8-naphthalenediocanhydride;1,8-Naphthoic anhydride;1,8-Napthalic anhydride;ai3-09071;Benzo[de]isochromene-1,3-dione;Naphthalenedicarboxylic-1,8-anhydride;naphthalenedicarboxylicanhydride;naphthalic

Properties Feedback
Appearance & Physical State: White to beige Crystalline solid
Density: 1.512 g/cm3
Melting Point: 288ºC
Stability: Stable under normal temperatures and pressures.
Storage Condition: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Specifications:
CAS no. : 2494-89-5
EINECS no. : 219-669-7
Molecular formula: C8H11NO6S2
Molecular weight: 281.306
Density: 1.608 g/cm3
Storage ：Store in cool and dry palce. Keep away from strong light ,high temperature.
Usage: Used as dye intermediates
transportation：by express delivery (by EMS,DHL,TNT & FEDEX) or sea & air shipping.
Shipment term: EXW, FOB, CIF, CNF
Sample: At any time to provide (lowest price & highest quality)

General Description
A colorless to light amber liquid with a disagreeable odor. Density 1.196 g / cm3. Boiling point 120°F.Flash point below 100°F. Insoluble in water but soluble in most organic solvents. May be highly toxic and irritating to the eyes and lungs. Used as an intermediate for pesticides, as an oil and gasoline additive, and as a flame retardant.
 
Air & Water Reactions
Highly flammable. Insoluble in water but soluble in most organic solvents. Contact with moisture in the air produces highly corrosive and toxic fumes containing hydrogen chloride. Decomposes in water producing acidic products.

Reactivity Profile
Diethyl chlorothiophosphate is incompatible with bases (including amines), with strong oxidizing agents, and with alcohols. May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291].
 
Health Hazard
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Bromoacetates and chloroacetates are extremely irritating/lachrymators. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.

CAS Number: 121-57-3
Possible CAS #: NA
Molecular form.: C?H?NO?S
Appearance: White to Off-White Solid
Melting Point: >297°C (dec.)
Mol. Weight: 173.19
Storage: Refrigerator
Solubility: DMSO (Slightly, Heated), Water (Slightly, Heated)
Stability: No Data Available
Category: Amines, Aromatics, Sulfur & Selenium Compounds
Boiling Point: No Data Available
Applications: Sulfanilic acid is a toxic metabolite of Tartrazine (T007700). Used as Ehrlich’s reagent, for detecting of nitrites. Antibacterial.

Chemical Properties
It is white flaky crystal. It is soluble in ethanol but insoluble in water and ether.  

Uses
1. It is used in the manufacture of dyes, synthetic resins, paints, disinfectants and wood processing brightener.
 2. It is used for the manufacture of plasticizers, disinfectants; it can also be used for the production of synthetic resins, paints, and fluorescent dyes.
 3. It can be used as primary brightener in the bright nickel plating. It is sued for bright nickel plating for multilayer to obtain uniform bright coating. It has a commonly used amount of 0.2 ~ 0.3 g / L.
 4. It can be used as plasticizers, also used for synthesis of organics, resins and saccharin.

Production methods
It is obtained by the reaction between toluenesulfonyl chloride and ammonia.
 First, add part of HN3 water into the reaction pot, stirring for adding p-toluenesulfonyl chloride with the temperature rising naturally to above 50 °C; after the temperature has dropped, add the remaining ammonia and have reaction for 0.5 h at 85 ~ 90 °C. Stop the reaction when the pH reaches 8 to 9. Cool to 20 °C, filter, and wash the filter cake with water to obtain the crude. Then further go through bleaching via activated carbon, alkali dissolution, acid precipitation, rejection filter, drying to get products. 

Chemical Properties
white crystalline powder
 
Usage
4-Tolylsulfonamide is a carbonic anhydrase inhibitor used the synthesis of antiglaucoma and anticancer drugs. 
 
Usage
Used in the manufacture of plasticizer, disinfectant, fungicide, fungicides, wood brightener. Also can be used in the production of synthetic resin, the coating, the fluorescent dye, pharmaceutical, etc. 

CAS No. : 119018-29-0
Formula: C16H21N3O4S
Molecular Weight: 351.42
Assay:99%min
Appearance: white solid  Storage:Room temperature
Application: An intermediate for the manufacture of medicines.

Product Name : 3-Ethyl-4-methyl-3-pyrrolin-2-one
CAS No. : 766-36-9
Formula: C7H11NO
Molecular Weight: 125.1683
Assay: 99.0%min
Appearance: White crystalline powder
Application: An intermediate for the manufacture of medicines.
storage temp. :sealed
Package:as per your requirement