Microcrystalline Waxes

Microcrystalline Waxes

Microcrystalline waxes are elastic and often "sticky" or "tacky". This is because of the high proportion of multi-branched hydrocarbon chains (iso-paraffins) as opposed to straight-branched chains (normals). While normal paraffins form large crystals, iso-normal paraffins form micro-crystals. These small crystals give an amorphous structure to the product making our Indramic products very flexible in contrast to the brittle nature of normal paraffins.
When testing to determine whether a wax is a "micro" or not, the crucual parameters are 1) molecular weight and 2) the iso-paraffin/normal paraffin ratio. Molecular weights of Indramic products range from approximately 580 to 700; this implies an average carbon number of 41 to 50.
IRM microcrystalline waxes are moisture free and range in color from a white to a brown, depending on the degree of refinement. Microcrystalline waxes dissolve similar to paraffin waxes: in chloroform, ether, benzene, carbon disulfide, volatile oils and other fixed oils. Micros do not dissolve in water/alcohol mixtures and dissolve only slightly in absolute alcohol. Indramic products are ductile and flexible, even at relatively low temperatures; they possess high tensile strength.
Micros are highly cohesive; this gives them adhesive properties and makes them resist both water vapor and liquid water.

  • Chemically Inert (odorless, tasteless)
  • High Melting Point (relative to paraffin)
  • High Viscosity
  • High Cohesion and Adhesion

Uses for Microcrystalline Wax

  • Base for chewing gum, lipstick, cold creams, and ointments (where they harden, lubricate, carry additives, and protect against moisture)
  • Food packaging, moisture proffing, film, foil, and corrugated board
  • Increasing the fluidity and the flexible bonding of hot-melt adhesives
  • Crayons, candles and caulk to sealants and fine polishes
  • Host for compounds that prevent rust
  • Insulating materials
  • Candle Additives (where they "bind" excessive oil or fragrances)

 


IRM Microcrystalline wax Congealing Point (°C)
(ASTM D-938)
Congealing Point (°F) Drop Point(°C)
(ASTM D-127)
Drop Point (°F) Viscosity, cSt
(ASTM D-445)
Penetration,dmm
(ASTM D-1321)
Color, ASTM D-1500 (A)or
Saybolt D-156(S)
Indramic 283-H 70 - 75 158-167 73 - 78 163.4-172.4 14.0 max 12 - 20 1.5 max(A)
Indramic 7883 75-80 167-176 78-84 172.4-183.2 14.0 min 22 max 2.5 max(A)
Indramic 72-SU 69-75.5 156.2-167.9 76-80.5 168.8-176.9 14-17 20-30 4.5 max(A)
Indramic 70-D -   65-77 149-170.6 7-15 100 max 2.5 max(A)
Indramic 78-D -   76.5-85 169.7-185 15-23 100 max 2.0 max(A)
Indramic 77-S 70-80 158-176 73-84 163.4-183.2 13-16 20-30 +20 min(S)
Indramic 800 -   77.2-93.3 170.96-199.94 9-21 6 min -
Indramic 91-G -   89-95.5 192.2-203.9 16.5
(20 typical)
5-10 +16 min(S)
Indramic 2945 -   76.5-85 169.7-185 14-20.5 35-70 +16 min(S)
Indramic 7080-B -   76.5-88 169.7-190.4   15 max +15 min(S)

 

Microcrystalline Waxes Safety Data Sheet