teacup. [ 掲示板 ] [ 掲示板作成 ] [ 有料掲示板 ] [ ブログ ]

 投稿者
  題名
  内容 入力補助画像・ファイル<IMG> youtubeの<IFRAME>タグが利用可能です。(詳細)
    
 URL
[ ケータイで使う ] [ BBSティッカー ] [ 書込み通知 ] [ 検索 ]


メディアサービス

 投稿者:古川  投稿日:2008年 6月23日(月)09時44分3秒
返信・引用
  第一稀元素化学工業株式会社
古川様

いつも大変お世話になっております。
18日は、ご来社いただいてのお打ち合わせ有難うござました。

添付ワードファイルの通り、SPLへ連絡を行っておりましたが、Mr. Hislopから
返答が参りました。
Phase-inか否かについては非常に強い懸念がある(新規に該当ではないか)との
こと。不純物について、意図的に加えたものは不純物とはいえない。
以下、ご参照ください。


Dear Chonan-san,

Today I have spoken with Dr. Knight concerning the substances that DKKK
propose to pre-register as phase-in substances.

Phase-in status

We have considered DKKK's reasoning for these substances being classed
as Phase-in substances. I am afraid that we still have a strong concern
that these substances are actually new (i.e. non phase-in) substances.

Our concerns are based on analogy with a case we dealt with several
years ago. On this occasion the company in question manufactured an
inorganic pigment which is "made by high temperature calcination of
titanium oxide, zinc oxide and tin oxide in varying amounts are
homogeneously and ionically interdiffused to form a crystalline matrix".
I have attached a piece of correspondence from the UK CA concerning this
particular example. The conclusion was that the substance could not be
considered to be covered by EINECS entries for the individual metal
oxides. I think it is OK to share this CA opinion with DKKK as no
company specific information is disclosed.

Hence, it is quite clear to us that if a crystalline matrix is formed
then the separate EINECS entries for the individual oxides can not be
used. It is therefore critical to determine as soon as possible is this
is the case for the DKKK substances.

Alternatively, if there is no chemical reaction then the individual
EINECS numbers can certainly be used.

It is possible that the true situation is somewhere between the two
clear cases given above. In other words it could be that there is no
migration of metal into the crystal lattice but nevertheless a solid
mass is produced in which there are separate domains of the individual
oxides. This would be rather complicated to deal with but as you know
under REACH the decisions have to be made by industry so a practical
solution might be to consider the resultant compound as a preparation,
register the individual substances separately and then deal with the
unusual physical form of the preparation in the chemical safety report.

If it is confirmed that there is a crystalline matrix formed then the
situation is obviously a difficult one for the members of the consortia.
In theory the substances should not be manufactured or imported into
Europe until the REACH registrations are in place. However, it is widely
acknowledged that this type of situation will occur quite often upon the
implementation of REACH. Hence, it could reasonably be expected that
special arrangements will be made to allow supply to continue, providing
that an assurance is given that REACH registrations will be made as soon
as possible. This is a matter that would have to be decided by the
individual member state CA's, since enforcement of REACH is the
responsibility of the individual member states.

Impurities

Impurity is defined in the "Guidance for identification....", page 11
(RIP 3.10). This definition includes the phrase "while it is present in
the final substance it was not intentionally added".
From this definition it is very clear to us that substances
intentionally added can not be considered to be impurities, regardless
of the percentage. Hence, we disagree with the Rhodia opinion.

Best regards,
John Hislop
 
 

teacup.掲示板 START!

 投稿者:teacup.運営  投稿日:2008年 6月23日(月)09時40分57秒
返信・引用
  掲示板が完成しました!
掲示板のデザイン変更や記事の削除などは管理者メニュー(管理画面)から行えます。
また、ケータイでは50種類以上のデザインテンプレートが選べますので、ぜひケータイからのご利用もお試しください。(※ケータイ版も同じURLでご利用になれます!)

teacup.の掲示板はお一人様いくつでもご利用になれますので、用途に合わせて掲示板を作成して下さい。※この記事を削除してご利用下さい。
【記事の削除方法】
・掲示板下部の管理者メニュー(管理画面)からログイン
・左メニューより「投稿の管理」をクリック
・削除したい記事にチェックを入れ「削除」をクリック

http://www.teacup.com/

 

レンタル掲示板
/1