Chapter GROUP 3I Chemicals, Metalloids and Petroleum Products

IL1702	Hydraulic fluids containing as the principal ingredients petroleum (mineral) oils, synthetic hydrocarbon oils, non-fluorinated silicones or fluorocarbons and having all of the following characteristics– …	A
	(1) A flash point of more than 477 K (204°C);
	(2) A pour point of 239 K (–34°C) or lower;
	(3) A viscosity index of 75 or greater; and
	(4) Thermally stable at 616 K (+343°C).
IL1715	Boron, boron compounds, mixtures and alloys, except pharmaceutical preparations packaged for retail sale, the following–
	(1) Boron element (metal) in all forms …	A
	(2) Boron compounds, mixtures and composites containing 5% or more of boron, the following–
	(a) non-ceramic boron-nitrogen compounds …	A
	(b) boron hydrides, except sodium boron hydride, potassium boron hydride, monoborane, diborane and triborane …	A
	(c) organoboron compounds including metallo-organoboron compounds …	A
—	Boron compounds and mixtures in which the boron –10 isotope comprises more than 20% of the total boron content …	A
IL1733	Base materials, non-composite ceramic materials, ceramic-ceramic composite materials and precursor materials for the manufacture of high temperature fine technical ceramic products, the following–
	(1) Base materials, namely high purity fine powders with uniform particle-size distribution, the following–
	single or complex non-composite oxides, borides, carbides or nitrides of silicon, aluminium, boron, zirconium or tantalum …	A
	except
	(a) single oxides of silicon, boron, aluminium or tantalum;
	(b) single or complex borides of silicon; and
	(c) single or complex borides or carbides of aluminium.
	(2) Non-composite ceramic materials, in crude or semi-fabricated form, having compositions of the base materials specified, other than as exceptions, in head (1) above …	A
	(3) Granular or fibrous ceramic-ceramic composite materials containing finely dispersed particles or phases of any non-metallic fibrous or whisker-like materials, whether externally introduced or grown in situ during processing, in which the following materials form the host matrix–
	(a) all oxides, includes glasses …	A
	(b) carbides or nitrides of silicon or boron …	A
	(c) borides, carbides or nitrides of zirconium, hafnium or tantalum …	A
	(d) carbon …	A
	(e) any combination of these materials …	A
	(4) Precursor materials, namely special purpose polymeric or metallo-organic materials for producing any phase or phases of the materials specified in heads (2) or (3) above, the following–
	(a) polycarbosilanes and polydiorganosilanes, for producing silicon carbide …	A
	(b) polysilazanes, for producing silicon nitride …	A
	(c) polycarbosilazanes, for producing ceramics with silicon, carbon and nitrogen components …	A
	In this entry, “high purity” means that a powder has a total metallic impurity, excluding intentional or desired additions, of less than 1000 ppm for single oxides or single carbides or less than 5000 ppm for complex compounds, single borides or single nitrides; and “fine powders with uniform particle-size distribution” means powders with at least 90% of the particles being not more than 10 micrometres and the average particle size not more than 5 micrometres. (For zircons, these limits are 5 micrometres and 1 micrometre respectively).
IL1734	Low density, rigid, carbon-bonded fibrous or non-fibrous carbon thermal insulating materials having all of the following characteristics– …	A
	(1) a capability of operating at temperatures greater than 2273 K (2000°C);
	(2) a density greater than 100kg/mu23 and less than 300kg/mu23;
	(3) a compressive strength of greater than 0.1 MPa and less than 1.0 MPa;
	(4) a flexural strength of greater than 1.0 MPa; and
	(5) a carbon content of greater than 99.9% of total solids.
IL1746	Polymeric materials and manufactures thereof, the following–
	(1) Polyimides (including maleimides) …	A
except the following forms: fully cured polyimide or polyimide-based film, sheet, tape or ribbon having a maximum thickness of 0.25 mm, whether or not coated or laminated with heat-sensitive or pressure-sensitive resinous substance of an adhesive nature, which contain no fibrous reinforcing materials and which have not been coated or laminated with carbon, graphite, metals or magnetic substances.
	(2) Polybenzimidazoles …	A
	(3) Aromatic polyamides, except staple fibres, filament yarns, chopped fibres, spun yarns or threads, having a fibre modulus of 0.022 Newtons per tex or less and a tenacity of 0.970 Newtons per tex or less, and pulp made from those materials …	A
	(4) Polybenzothiazoles …	A
	(5) Polyoxadiazoles …	A
	(6) Polyphosphonitriles …	A
	(7) Polystyrylpyridine …	A
	(8) Thermoplastic liquid crystal copolyesters, the following–
	(a) ethylene copolyesters of terephthalic acid and parahydroxybenzoic acid …	A
except manufactures thereof having both of the following characteristics–
	(i) a tensile modulus of less than 15 GPa; and
	(ii) specially designed for non-aerospace, non-electronic civil applications
	(b) phenylene or biphenylene copolyesters of terephthalic acid and parahydroxybenzoic acid …	A
	(9) Polybenzoxazoles …	A
	(10) Aromatic polyether ether ketones …	A
	In this entry–
	“tenacity” is the tensile stress expressed as force per unit linear density of the unstrained specimen, expressed in Newtons per tex;
	“fibre modulus” is the ratio of change in stress to change in strain between two points on a stress-strain curve, viz the point of zero stress and the point of breaking stress expressed in Newtons per tex; and
	“tex” is the number of grammes in 1,000 metres of material.
IL1749	Polycarbonate sheet of a thickness between 1.5 mm and 25.4 mm (inclusive) having no major defects and having all of the following optical characteristics– …	A
	(1) Less than 2% haze as determined by method ASTM D1003–
	(2) An angular deviation, as determined by method ASTM D637–
	(a) of not more than 12 minutes at any location more than 25.4 mm from the edge of the sheet for sheet thickness of between 1.5 mm and 9.5 mm (inclusive); or
	(b) of not more than 20 minutes at any location more than 25.4 mm from the edge of the sheet for sheet thickness of more than 9.5 mm and not more than 25.4 mm;
	(3) A total number of minor optical defects (excluding those within 25.4 mm of the sheet edge)–
	(a) not exceeding 1 per 0.368 mu22 for sheet of a thickness of 12.7 mm or less;
	(b) not exceeding 2 per 0.092 mu22 for sheet of a thickness of more than 12.7 mm.
	In this entry “major defects” means variations in the material which cause angular deviations either side of the undeviated position exceeding those specified in head (2) and “minor defects” include any embedded particles, bubbles, scratches or internal inhomogeneity which reduce visibility through the plastic and those localised imperfections which cause a variation in angular deviation of more than 5 minutes within a distance of not more than 508 mm on the screen when tested by method ASTM D637.
IL1754	Fluorinated compounds, materials and manufactures, the following–
	(1)
	(a) Dibromotetrafluorethane, except dibromotetrafluoroethane having a purity of 99.8% or less and containing at least 25 particles each 200 micrometres or larger per 100 ml …	A
	(b) Perfluoroalkylamines …	A
	(2) Polymeric materials and intermediates, unprocessed, the following–
	(a) Polychlorotrifluoroethylene, oily and waxy modifications only …	A
	(b) Fluoroelastomers composed of at least 95% of a combination of two or more of the monomers tetrafluoroethylene, chlorotrifluoroethylene, vinylidenefluoride, hexafluoropropylene and bromotrifluoroethylene, iodotrifluoroethylene, perfluoromethyl-vinylether and perfluoropropoxy-propylvinylether …	A
	(c) Polybromotrifluoroethylene …	A
	(d) Copolymers of vinylidene fluoride having 75% or more beta crystalline structure without stretching …	A
	(e) Fluorinated silicone rubber and intermediates for their production containing 10% or more of combined fluorine …	A
	(3) Greases, lubricants and dielectric, damping and flotation fluids made of at least 85% of any of the materials listed in heads (1) and (2) above; …	A
	(4) Electric wire and cable coated with or insulated with any of the materials in (2)(b), except oil well logging cable; …	A
	(5) Seals, gaskets, rods, sheets, sealants or fuel bladders made of more than 50% of any of the materials in (2)(b) specially designed for aerospace and aircraft use; …	A
	(6) Piezoelectric polymers and copolymers made from vinylidene fluoride having both of the following characteristics– …	A
	(a) In sheet or film form; and
	(b) With a thickness of more than 200 micrometres.
IL1755	Silicone fluids and greases, the following–
	(1) Fluorinated silicone fluids, except those with a kinematic viscosity of 5000 centistokes or more measured at 25°C …	A
	(2) Silicone and fluorinated silicone lubricating greases capable of operating at temperatures of 180°C or higher and having a drop point of 220°C or higher …	A
IL1757	Compounds and Materials, the following–
	(1) Monocrystalline silicon, except metallurgical grade monocrystalline silicon having a purity not better than 99.97%…	A
	(2) Gallium of a purity of 99.9999% or greater and gallium III/V compounds of any purity level,…	A
	except
	(a) gallium phosphide; or
	(b) other gallium III/V compounds having a dislocation density (etch pit density – EPD) greater than 500,000 per cmu22;
	(3) Indium of a purity greater than 99.9995% and III-V indium compounds containing more than 1% indium…	A
	(4) Hetero-epitaxial materials consisting of a monocrystalline insulating sub-strate epitaxially layered with silicon, compounds of gallium or compounds of indium…	A
	(5) Elemental Cd and Te of purity levels of 99.9995% or greater, and CdTe compounds of a purity level of 99.99% or greater or single crystals of CdTe of any purity level…	A
	(6) Polycrystalline silicon, except polycrystalline silicon having a purity of 99.99% or less and containing at least 0.5 part in 10u26 each of iron, carbon, boron and phosphorus, plus other impurities…	A
	(See also the entry in Group 3D relating to equipment for the manufacture of electronic materials.)
	(7) Compounds used in the synthesis of the materials specified in head (6) above, having a purity level based upon the amount the primary constituent of 99.5% or better, or used as the silicon source in the deposition of epitaxial layers of silicon, silicon oxide or silicon nitride…	A
	This item includes SiCld22Hd22 having a purity level of 97% or more.
	(8) Single crystal sapphire substrates…	A
	(9) Bd22Od23 with a purity of 99.9% or greater, containing 1,000 parts per million of Hd22O or less, in powder or cast form…	A
	(10) Monocrystalline germanium with a resistivity greater than 100 ohm. cm.…	A
	(11) Resist materials having any of the following characteristics:
	(a) negative resists with a spectral response adjusted for use below 350 nanometres…	A
	(b) for use with electron or ion beams with a sensitivity of 100 microcoulombs/cmu22 or better…	A
	(c) positive resists…	A
	(d) for use with X rays with a sensitivity of 500 millijoules/cmu22 or better; or…	A
	(e) specified or optimised for dry development…	A
	(12) Single-crystal forms of bismuth germanium oxide having piezo-electric properties and single-crystal forms of lithium niobate, of lithium tantalate and of aluminium phosphate…	A
	(13) Metal-organic or hydride compounds of beryllium and magnesium, zinc, cadmium and mercury, aluminium, gallium and indium, phosphorus, arsenic and antimony and selenium and tellurium, having a purity (metal basis) of 99,999% or greater…	A
IL1759	Syntactic foam for underwater use, the following–
	(1) Syntactic foam formulated for applications at depths greater than 1,000 metres…	A
	(2) Syntactic foam having a density of 0.561 g/cmu23 (35 lb/cu.ft.) or less…	A
	In this entry– “syntactic foam” consists of hollow plastic or glass spheres less than 100 micrometres in diameter uniformly embedded in a resin matrix.
IL1760	Compounds of tantalum and niobium (columbium), the following–
	(1) Tantalates and niobates having a purity of 99% or more, except fluorotantalates…	A
	(2) Other compounds containing 20% or more of tantalum in which the niobium content with respect of tantalum is less than 1 part per thousand…	A
	This entry does not cover single-crystal lithium tantalate for which see the entry in this Group relating to compounds and materials.
IL1763	Fibrous and filamentary materials suitable for use in composite structures or laminates, the following–
	(1) having both of the following characteristics–…	A
	(a) specific modulus greater than 3.18 × 10u26m (1.25 × 10u28 in);
	(b) specific tensile strength greater than 7.62 × 10u24m (3 × 10u26 in); or
	(2) having both of the following characteristics–…	A
	(a) specific modulus greater than 2.54 × 10u26m (1 × 10u28 in);
	(b) melting or sublimation point higher than 1,922 K (1,649°C) in an inert environment;
	except
	(i) carbon fibres having a specific modulus less than 5.08 × 10u26m (2 × 10u28 in) and a specific tensile strength less than 2.54 × 10u24m (1 × 10u28 in);
	(ii) discontinuous, multiphase, polycrystalline alumina fibres in chopped fibre or random mat form, containing 3% or more silica, having a specific modulus less than 10 × 10u26m (3.92 × 10u28 inches).
	(3) Resin-impregnated fibres (prepregs) and metal-coated fibres (preforms) made with materials specified in heads (1) or (2) above…	A
	(4) Composite structures, laminates and manufactures thereof made either with an organic matrix or a metal matrix utilising materials specified in heads (1) and (2) above…	A
	In this entry–
	“specific modulus” means Young’s modulus in N/mu22 (lb force/sq.in) divided by specific weight in N/mu23 (lb force/cu.in), measured at a temperature of (296 .266 2) K ((23 .266 2)°C) ((73.4 .266 3.6)°F) and a relative humidity of (50 .266 5)%; and
	“specific tensile strength” means ultimate tensile strength in N/mu22 (lb force/sq. in) divided by specific weight in N/mu23 (lb force/cu. in) measured at a temperature of (296 .266 2) K ((23 .266 2)°C) ((73.4 .266 3.6)°F) and a relative humidity of (50 .266 5)%.
IL1767	Preforms of glass, or of any other material, specially designed for the fabrication of optical fibres specified in head (2) of the entry in Group 3F relating to cable and wire…	A
	In this entry “preforms” are defined as bars, ingots or rods, of glass, plastic or other materials, which have been specially processed for use in the fabrication of optical fibres.
IL1781	Lubricating oils and greases, synthetic, which are or contain as their principal ingredient, the following–
	(1) monomeric and polymeric forms of perfluorotriazines, perfluoroaromatic ethers and esters, and perfluoroaliphatic ethers and esters…	A
	(2) polyphenyl ethers and thio ethers containing more than three groups of any of the following:…	A
	(a) phenyl;
	(b) alkyl phenyl;
	(c) phenyl and alkyl phenyl;
—	Chemicals, the following–
	(1) Chloreothanol…	I
	(2) Dimethylamine…	I
	(3) Dimethyl methylphosphonate…	A
	(4) Dimethylphosphite…	A
	(5) Hydrogen fluoride…	A
	(6) Methyl phosphonyl dichloride…	A
	(7) Methyl phosphonyl difluoride…	A
	(8) Phosphorus oxychloride…	A
	(9) Phosphorus trichloride…	A
	(10) Potassium fluoride…	I
	(11) Thiodiglycol…	A
	(12) Trimethylphosphite…	A
—	Synthetic rubbers, the following–
	(1) Polymeric products of butadiene, the following:
	(a) carboxyl terminated polybutadiene, hydroxyl terminated polybutadiene, thiol terminated polybutadiene and cyclised 1, 2-polybutadiene…	A
	(b) mouldable copolymers of butadiene and acrylic acid…	A
	(c) mouldable terpolymers of butadiene, acrylonitrile and acrylic acid or any of the homologues of acrylic acid…	A
	(2) Carboxyl terminated polyisoprene…	A