Velsicol CHLORENDIC ANHYDRIDE

Velsicol CHLORENDIC ANHYDRIDE is a solid, reactive flame retardant. An acid anhydride with a chlorine content of 54.5%, it imparts permanent flame retardance, high heat distortion, and excellent corrosion and abrasion resistance to resins such as unsaturated polyesters and alkyds. Chlorendic Anhydride is also used as a cross-linking agent in epoxy resins as a low-smoke component in polyols for rigid polyurethane foams and in UV curable inks and coatings for its adhesion to metal. Resin systems containing Chlorendic Anhydride can be formulated to meet ASTM E84 (Underwriter’s Tunnel Test) UL-94 and ASTM E 162-78 (Surface Flammability Test) as well as to meet U.S. military specifications for flame retardant, corrosion- resistant coatings.Unsaturated polyesters resins made from Chlorendic Anhydride are used in flame-retardant, glass- reinforced polyester composites for boats, construction panels, electrical applications and machine housings. In polyester corrosion-resistant applications, Chlorendic Anhydride is used in piping and in tanks and scrubbers for the chemical, fertilizer and pulp industries.Epoxy resins from Chlorendic Anhydride can be used as laminates for electrical uses, potting and encapsulation, adhesives requiring flame resistance, and high-heat distortion and protective coatings where permanent flame retardance, heat resistance, corrosion resistance and abrasion resistance are required.Alkyd coatings from Chlorendic Anhydride-based alkyds are used extensively for industrial and marine coatings applications. They are used in approved coating formulas, meeting military specifications Mil-R- 21417 for Navy ships and in industrial environments requiring chemical resistance combined with flame retardance.UV curable ink and coatings from Chlorendic Anhydride are used in polyester-based coatings and inks to provide good adhesion to metal, fast curing and hardness. In heat-fusible polyester and alkyd inks, it provides good adhesion to plastics, flexibility and high gloss.

Chemical Family: Anhydrides

Functions: Crosslinking Agent, Flame Retardant

Compatible Polymers & Resins: Alkyds, Epoxies (EP), Polyesters, Polyols, Polyurethanes (PU)

Molecular Weight: 371.0 - 371.0 g/mol

Features: Abrasion Resistance, Corrosion Resistance, Excellent Adhesion, High Gloss

Synonyms: 1,4,5,6,7,7-Hexachloro-5-bicyclo[2.2.1]heptene-2,3-dicarboxylic anhydride, 1,4,5,6,7,7-Hexachloro-5-norbornene-2,3-dicarboxylic anhydride, 1,4,5,6,7,7-Hexachlorobicyclo[2.2.1]-5-heptene-2,3-dicarboxylic acid anhydride, 1,4,5,6,7,7-Hexachlorobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride, 2,3-Dicarboxy-1,4,5,6,7,7-hexachlorobicyclo[2.2.1]hept-5-ene anhydride, 3,4,5,6,7,7-Hexachloro-1,2,3,6-tetrahydro-3,6-endo-methylenephthalic anhydride, 4,5,6,7,8,8-Hexachloro-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, Chlorendic anhydride, HET Anhydride, Hexachloro-5-norbornene-2,3-dicarboxylic anhydride, Hexachloroendomethylene tetrahydrophthalic anhydride, NSC 22229

Safety Data Sheet
  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Chemical Family
CASE Ingredients Functions
Industrial Additives Functions
CAS No.
115-27-5
EC No.
204-077-3

Features & Benefits

Industrial Additives Features

Applications & Uses

Compatible Substrates & Surfaces
Cure Method
Industrial Additives End Use
Ink & Toner Type

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Assaymin. 95%
Chlorendic acidmax. 3%
Color (polyester), Gardnermax. 1
Hexachlorocyclopentadienemax. 0.02%
Maleic anhydridemax. 1%
Chlorine54.5%
Free Volatilesmax. 1%
Iron1.0ppm
Molecular weight (average)371.0
Solution Color, APHAmax. 100

Regulatory & Compliance

Certifications & Compliance
Quality Standards

Technical Details & Test Data

Chlorendic Containers - Unloading

Falling product can generate a static charge. Protect against the hazards associated with potential static discharge by using an inert atmosphere.

250 lb drums: Remove seal and wire-tie on drum rim. Pull locking lever down and pull handle out to release ring. Remove ring and lid from the drum. The Chlorendic Anhydride is sealed in an inner bag. Remove the wire tie to open the bag. Scoop or shovel product out of the drum. If entire contents are not to be used from the drum, reseal the inner bag tightly and replace top on drum to prevent the absorption of water.

500kg and 2000lb Bags: Support bag with the lifting straps. Pull inner liner through top nozzle and attach to secure structure to minimize the likelihood of the inner liner slipping out of the outer bag with the product. Untie the string on the bottom of the bag and pull the bottom nozzle out. With the nozzle properly positioned, untie second string to release product.

25kg Bags :The 25kg bag is simply a Kraft style bag with an inner liner. Tear or cut a hole in the outer bag an inner liner, and pour out product.

Safety & Health

Safe Handling procedures

Personal Protective Equipment - All personnel involved in the manufacture, transfer, loading and unloading of Chlorendic Anhydride are required to wear specific protective clothing and safety equipment. Standard gear consists of hard hat, goggles, gloves, safety shoes/boots, and long sleeve coveralls. In areas where the dry product can produce a dusty environment, a full-face piece cartridge respirator is required. When dusty atmosphere exceeds 1 mg/m3 a full-face piece air supplied respirator is recommended. It is recommended that the employees remove all safety gear and shower at the end of the workday. Chlorendic Anhydride reacts with water and/or sunlight to form Chlorendic Acid. The National Toxicology Program (NTP) has concluded that Chlorendic acid showed clear evidence of carcinogenicity (cancer) in animals. The International Agency for Research on Cancer (IARC) has given Chlorendic Acid an overall evaluation of 2B (possibly carcinogenic).Chlorendic Anhydride may be harmful if swallowed, irritating to eyes, skin and respiratory tract and may cause allergic skin reaction. No exposure limits have been set for Chlorendic Anhydride.

Storage & Handling

Chlorendic Anhydride Storage

While Chlorendic Anhydride is not flammable, the occluded solvent trapped within the crystal may ignite. Protect against static buildup and/or use in an inert atmosphere. Chlorendic Anhydride degrades to Chlorendic Acid in the presence of water and/or sunlight. Store in cool, ventilated area away from sources of ignition. Keep away from direct sunlight or strong incandescent light. Keep drums and bags closed to prevent the absorption of water. Recommended material of construction for equipment that contacts Chlorendic Anhydride is 316 stainless steel.