Cryolite
CAS Nos. 15096-52-3 and 13775-53-6
US Federal Register
 
 

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Abstracts

ACTIVITY: Insecticide (Fluorine, Inorganic)

Cryolite
(Aluminum sodium fluoride)

Molecular formula: Al-F6.3Na
CAS No. 15096-52-3
Structure:
Aluminate(3-), hexafluoro-, trisodium, (OC-6-11)-
(Aluminum sodium fluoride)

Molecular formula: Al-F6.3Na
CAS No. 13775-53-6
Structure:

• The cryolite referred to by US EPA for pesticide use is CAS No. 15096-52-3. Both of the above structures are the same. The only difference is that there are two CAS numbers.

• On March 4, 2004, Solvay Fluorides (a subsidiary of Solvay Chemicals, Inc.) submitted a report to US EPA titled: Solvay Fluorides - TSCA Section 8(e) - Sodium Hexafluoroaluminate (CAS No. 13775-54-6 - 90 Day Repeat Dose Inhalation Study in Rats (snout only exposure).


US Federal Register

Date published in FR Docket Identification Number Details
July 31, 2002 OPP-2002-0155

Tolerance Revocations for residues in or on beets, radishes, rutabagas, and turnips. FINAL RULE. EPA is revoking tolerances in 40 CFR 180.145 for residues of fluorine compounds cryolite and synthetic cryolite (sodium aluminum fluoride) in or on beets, roots; radish, roots; rutabaga, roots; and turnip, roots. The registrant(s) of cryolite requested voluntary cancellation for use on beets, radishes, rutabagas, and turnips. Rutabagas were removed from cryolite labels prior to 1988. Beets were removed from cryolite labels in 1988. On September 25, 1996 a FIFRA section 6(f)(1) notice of receipt of a request to voluntarily delete radish and turnip uses from cryolite registrations was published in the Federal Register (61 FR 50294) (FRL-5394-2), with a use deletion date of December 24, 1996. EPA believes that sufficient time has passed for stocks to have been exhausted and for treated commodities to have cleared channels of trade.

April 24, 2002 OPP-2002-0007

Gowan Company - New and modified tolerances. According to Gowan's petition: "The estimated dietary exposure in this assessment for cryolite... Grapes and grape products are the largest contributors to dietary exposure estimates for all population subgroups. Lettuce was also a significant source of exposure for adult populations." The following specific actions are proposed:

  • Modify existing tolerances:
    • Apricots from 7 ppm to 10 ppm
    • Cucumber from 7 ppm to 4 ppm
    • Cranberry from 7 ppm to 2 ppm
    • Kale from 7 ppm to 35 ppm
    • Kiwi from 15 ppm to 8 ppm
    • Nectarines from 7 ppm to 10 ppm
    • Plums from 7 ppm to 2 ppm (tolerance with regional registration)
  • Renew tolerances and remove time-limitation:
    • Potatoes - 2 ppm
    • Potatoes, waste from processing 22 ppm
  • Establish new tolerances:
    • Berries (crop group 13) - 0.5 ppm (replaces separate existing tolerances for blackberries, blueberries, boysenberries, dewberries, loganberries, raspberries and youngberries)
    • Prunes - 7 ppm (tolerance with regional registration)

Comments on this petition are due on or before May 24, 2002. It is essential for those who submit comments to refer to EPA's updated risk assessment on fluoride which was published in the September 5, 2001, Federal Register petition for the first-time use of Sulfuryl fluoride as a fumigant on food commodities.

See also: April 24, 2002 - Comments submitted to EPA on Gowan's petition for new, modified, and proposed tolerances. US EPA Docket control number OPP-2002-0007. From Paul and Ellen Connett.

April 15, 2002 OPP-2002-0019 Proposed Revocation of Tolerances. The registrant(s) of cryolite requested voluntary cancellation for use on beets, radishes, rutabagas, and turnips. Rutabagas were removed from cryolite labels prior to 1988. Beets were removed from cryolite labels in 1988. Radishes and turnips were removed from cryolite labels in 1996. In June 1996, the cryolite RED recommended that the tolerances for beets, roots; radish, roots, rutabaga, roots; and turnip, roots be revoked because the registrant intended to request voluntary cancellation. On September 25, 1996 (61 FR 50294) (FRL-5394-2), a FIFRA section 6(f)(1) notice of receipt of a request to voluntarily delete radish and turnip uses from cryolite registrations was published in the Federal Register, with a use deletion date of December 24, 1996. Accordingly, the Agency is proposing to revoke tolerances in 40 CFR 180.145 for residues of fluorine compounds cryolite and synthetic cryolite (sodium aluminum fluoride) in or on beets, roots; radish, roots; rutabaga, roots; and turnip, roots. EPA believes that sufficient time has passed for stocks to have been exhausted and for treated commodities to have cleared the channels of trade.
Nov 21, 2001 PF-1056 Cryolite and Synthetic Cryolite (sodium aluminum fluoride). Pesticide petition for tolerances of the insecticidal fluorine compounds in or on the raw agricultural commodities peppermint and spearmint tops at 50 ppm. The summary of this petition was prepared by the registrant Gowan Company, and petitioned for by the Interregional Research Project Number 4. Comments, identified by docket control number PF-1056, must be received on or before December 21, 2001.
Dec 21, 2000 TMD-00-02
(USDA)
Prohibited from use in US National Organic Standards. USDA National Organic Program. - FINAL RULE. Note: the lengthy Final Rule is not easily accessible on the regular Federal Register website. However, USDA, which announced the Final Rule on Dec 20, allows easy access to the entire Rule at its National Organic Program website.
July 6, 2000 OPP-301008 European Community Establishes a Tolerance of 1 ppm for Fluoride Residue in Wine.
This FR is the Final Rule for the non-fluorinated pesticide Tebufenozide and the tolerances for residues on grapes for "Emergency Exemptions". Tebufenozide was approved because: "...for the 2000 crop year, nearly all major California wineries with export markets have advised their growers that they will not accept grapes which have been treated with cryolite or any other product which would affect the level of fluorides in wine. The European Community recently established strict tolerance levels of 1 ppm with respect to fluoride residues. There is a direct correlation between even limited use of cryolite on wine grapes which can result in fluoride levels in wine above 3 ppm."
March 24, 1999 NA

GOWAN - Request to voluntarily cancel pesticide registration
-- Gowan Cryolite Bait. EPA Reg. No. 010163 WA-95-001

Jan 28, 1999 OPP-300788 Partial Withdrawal of Tolerance Revocations. - FINAL RULE. This final rule and order withdraws the revocation of tolerances for residues of cryolite (fluorine compounds) on apricots, blackberries, boysenberries, dewberries, kale, loganberries, nectarines, and youngberries made in a final rule entitled ``Revocation of Tolerances for Canceled Food Uses'', (October 26, 1998; (63 FR 57067) (FRL-6035-6) which had an effective date of January 25, 1999. EPA is withdrawing the revocation of those specific tolerances because comments from Gowan Company made to the proposed rule (63 FR 5907, February 5, 1998) (FRL-5743-9) concerning cryolite were inadvertently not addressed.
Oct 26, 1998 OPP-300733 Revocation of Tolerances for Canceled Food Uses.- FINAL RULE. The tolerances for cryolite use on blackberries, boysenberries, dewberries, loganberries, and youngberries will be revoked along with the tolerances on apples; apricots; beans; beets, tops; carrots; corn; kale; mustard greens; nectarines; okra; peanuts; pears; peas; quinces; radish, tops; rutabagas, tops; and turnip, tops.
Feb 5, 1998 OPP-300602 Fluorine compounds. Revocation of tolerances for residues of cryolite and synthetic cryolite (sodium aluminum fluoride) in certain foods. Proposed Rule.
Dec 16, 1997 TMD-94-00-2 National Organic Standards. Proposed Rule. The National Organic Standards Board (NOSB) recommended that Cryolite (sodium fluoaluminate) "be prohibited for use in organic farming and handling." However, the Agricultural Marketing Service of USDA, states in this Notice: "we did not accept the NOSB's recommendation for the prohibition of strychnine, manure ash, and sodium fluoaluminate."
Dec 5, 1997 OPP-300586 Cryolite Task Force. Time-Limited Pesticide Tolerances for residues in or on potatoes at 2.0 ppm and in potato waste from processing at 22.0 ppm.- FINAL RULE. The tolerance will expire on November 21, 2001.
August 7, 1997 PF-750

Cryolite Task Force. Pesticide Tolerance Petition. The Cryolite Task Force is comprised of Elf Atochem North America and Gowan Company. This notice announces the filing of their petition proposing regulations amending the established tolerances for residues of the insecticidal fluorine compounds cryolite and/or synthetic cryolite (sodium aluminum fluoride or sodium aluminofluoride) in or on:

Commodity Current Proposed
Cabbage 7 ppm 45 ppm
Citrus Fruits 7 ppm 95 ppm
Collards 7 ppm 35 ppm
Eggplant 7 ppm 30 ppm
Lettuce 7 ppm  
Lettuce, head   180 ppm
Lettuce, leaf   40 ppm
Peaches 7 ppm 10 ppm
Raisins none 55 ppm
Tomatoes 7 ppm 30 ppm
Tomato paste none 45 ppm
August 4, 1997 OPP-300523 Pesticides Subject to Tolerance Reassessment.
March 12, 1997 PF-712 Cryolite Task Force. Pesticide Tolerance Petition. This notice announces the filing of a pesticide petition proposing regulations establishing tolerances for residues of the insecticidal fluorine compounds cryolite and/or synthetic cryolite (sodium aluminum fluoride or sodium aluminofluoride) in or on potatoes and in processed potato waste.
Jan 31, 1997 OPP-34099 Availability of Reregistration Eligibility Decision (RED) Document for Comment.
Sept 25, 1996 OPP-340102

AMVAC CHEMICAL - Request to delete certain uses on label in pesticide registration:
-- Cryolite 93 Insecticide; on Apples, peaches, pears, mustard greends, turnips, radishes, craneberries, strawberries. EPA Reg. No. 005481-00132

May 15, 1996 OPP-34093 EPA's Reregistration Eligibility Decision (RED) Development Schedule
May 8, 1996 PP 9F3739
and
FAP 1H5604/P654

ATOCHEM NORTH AMERICA, INC. - Proposed Pesticide Tolerance and Feed Additive Regulation. EPA proposes to establish a pesticide tolerance for residues of the insecticidal fluorine compounds cryolite and/or synthetic cryolite (sodium aluminum fluoride) in or on the raw agricultural commodity potatoes at 2 ppm and a feed additive regulation for the animal feed commodity, potato waste resulting from the processing of treated potatoes at 22 ppm.

April 22, 1993 NA Pesticide Tolerance and Animal Feed Additive Regulation for Fluoride Compounds. FINAL RULE. Excerpt.
 
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