Clarifying agents may be safely used in polymers that are articles or components of articles intended for use in contact with food, subject to the provisions of this section: ------------------------------------------------------------------------
Substances Limitations------------------------------------------------------------------------Aluminum, hydroxybis[2,4,8,10- For use only as a clarifying
tetrakis(1,1-dimethylethyl)-6-hydroxy- agent at levels not to exceed
12H-dibenzo[d,g][1,3,2]dioxaphosphocin 0.25 percent by weight of
6-oxidato]-(CAS Reg. No. 151841-65-5). polypropylene and
polypropylene copolymers
complying with Sec.
177.1520(c) of this chapter,
items 1.1, 3.1, or 3.2. The
finished polymers contact food
only of types I, II, IV-B, VI-
B, VII-B, and VIII as
identified in Table 1 of Sec.
176.170(c) of this chapter,
under conditions of use B
through H described in Table 2
of Sec. 176.170(c) of this
chapter or foods only of types
III, IV-A, V, VI-A, VI-C, VII-
A, and IX as identified in
Table 1 of Sec. 176.170(c) of
this chapter, under conditions
of use C through G described
in Table 2 of Sec. 176.170(c)
of this chapter.Bis(p-ethylbenzylidene) sorbitol (CAS For use only as a clarifying
Reg. No. 79072-96-1). agent at a level not to exceed
0.35 percent by weight of
olefin polymers complying with
Sec. 177.1520(c) of this
chapter, items 1.1a, 1.1b,
3.1a, 3.2a, or 3.2b, where the
copolymers complying with
items 3.1a, 3.2a, or 3.2b
contain not less than 85
weight percent of polymer
units derived from propylene.Di(p-tolylidene) sorbitol (CAS Reg. No. For use only as a clarifying
54686-97-4). agent at a level not to exceed
0.32 percent by weight in
propylene homopolymer
complying with Sec.
177.1520(c) of this chapter,
item 1.1, and in olefin
copolymers complying with Sec.
177.1520(c) of this chapter,
item 3.1 (containing at least
85 weight percent of polymer
units derived from propylene),
in contact with all food types
under conditions of use C
through G described in table 2
of Sec. 176.170(c) of this
chapter.Dibenzylidene sorbitol (CAS Reg. No. For use only as a clarifying
32647-67-9) formed by the condensation agent for olefin polymers
of two moles of benzaldehyde with one complying with Sec.
mole of sorbitol, such that the final 177.1520(c) 1.1, 3.1, and 3.2
product has a minimum content of 95 of this chapter under
percent dibenzylidene sorbitol. conditions of use C, D, E, F,
and G, described in table 2 of
Sec. 176.170(c) of this
chapter at a level not
exceeding 0.25 percent by
weight of the polymer.Dimethyldibenzylidene sorbitol (CAS For use only as a clarifying
Reg. No. 135861-56-2) agent at a level not to exceed
0.4 percent by weight of
olefin polymers complying with
Sec. 177.1520(c) of this
chapter, items 1.1, 3.1, and
3.2, where the copolymers
complying with items 3.1 and
3.2 contain not less than 85
weight percent of polymer
units derived from
polypropylene. The finished
polymers shall be used in
contact with food under
conditions of use A through H
described in table 2 of Sec.
176.170(c) of this chapter.Polyvinylcyclohexane (CAS Reg. No. For use only as a clarfiying
25498-06-0). agent for polypropylene
complying with Sec.
177.1520(c) of this chapter,
item 1.1., and in propylene
containing copolymers
complying with Sec.
177.1520(c) of this chapter,
items 3.1 and 3.2, at a level
not exceeding 0.1 percent by
weight of the polyolefin.Sodium di(p-tert-butylphenyl)phosphate For use only as a clarifying
(CAS Reg. No. 10491-31-3). agent at a level not exceeding
0.35 parts per hundred of the
resin in olefin polymers
complying with Sec.
177.1520(c) of this chapter,
items 1.1, 3.1, or 3.2 (where
the copolymers complying with
items 3.1 and 3.2 contain not
less than 85 weight percent of
polymer units derived from
propylene).
Sodium 2,2'-methylenebis(4,6-di-tert- For use only:
butylphenyl)phosphate (CAS Reg. No. 1. As a clarifying agent at a
85209-91-2). level not exceeding 0.30
percent by weight of olefin
polymers complying with Sec.
177.1520(c) of this chapter,
items 1.1, 3.1, or 3.2 (where
the copolymers complying with
items 3.1 and 3.2 contain not
less than 85 weight percent of
polymer units derived from
polypropylene). The finished
polymers contact foods only of
types I, II, IV-B, VI-B, VII-
B, and VIII as identified in
table 1 of Sec. 176.170(c) of
this chapter and limited to
conditions of use B through H,
described in table 2 of Sec.
176.170(c), or foods of all
types, limited to conditions
of use C through H described
in table 2 of Sec.
176.170(c).
2. As a clarifying agent at
levels not exceeding 0.10
percent by weight of
polypropylene complying with
Sec. 177.1520(c) of this
chapter, items 1.1(a) or
1.1(b) and of olefin polymers
complying with Sec.
177.1520(c) of this chapter,
items 3.1(a), 3.1(b), 3.1(c),
3.2(a), or 3.2(b) (where the
copolymers contain not less
than 85 weight percent of the
polymer units derived from
polypropylene.) The finished
polymers shall be used in
contact with foods only under
conditions of use A through H
described in Table 2 of Sec.
176.170(c) of this chapter.
3. As a clarifying agent at a
level not exceeding 0.30
percent by weight of olefin
polymers complying with Sec.
177.1520(c) of this chapter,
item 2.2, where the finished
polymer contacts food only of
types I, II, IV-B, VI-A, VI-B,
and VII-B as identified in
Table 1 of Sec. 176.170(c) of
this chapter, and limited to
conditions of use B through H
described in Table 2 of Sec.
176.170(c) of this chapter, or
foods of types III, IV-A, V,
VI-C, and VII-A as identified
in Table 1 of Sec. 176.170(c)
of this chapter and limited to
conditions of use C through G
described in Table 2 of Sec.
176.170(c) of this chapter.------------------------------------------------------------------------ [46 FR 59236, Dec. 4, 1981, as amended at 52 FR 30920, Aug. 18, 1987; 53 FR 30049, Aug. 10, 1988; 54 FR 12432, Mar. 27, 1989; 54 FR 14734, Apr. 12, 1989; 55 FR 52990, Dec. 26, 1990; 56 FR 1085, Jan. 11, 1991; 59 FR 13650, Mar. 23, 1994; 59 FR 25323, May 16, 1994; 61 FR 33847, July 1, 1996; 61 FR 51588, Oct. 3, 1996; 61 FR 65943, Dec. 16, 1996; 63 FR 56789, Oct. 23, 1998; 63 FR 68392, Dec. 11, 1998; 64 FR 26843, May 18, 1999; 65 FR 16316, Mar. 28, 2000]