,,,brl au?or;y ( nor? am]ica,'   #a

           ,provi.nal ,guid.e
           = ,*emi/ry ,nota;n
          ,us+ ,,ueb ) ,neme?

          ,approv$ ,june #bjbj

  ,! ,,bana ,*emi/ry ,committee develop$
? provi.nal guid.e = transcrib+ *emi/hy
us+ ,neme? 9 ,,ueb 3texts4 ,? docu;t is
a revi.n ( ! previ\sly publi%$ provi.nal
guid.e & w 2 obsolete af ! updat$
,*emi/ry ,code is publi%$4
  ,^! guidel9es >e to 2 appli$ 9 addi;n
to ^? pres5t$ 9 ! mo/ rec5t $i;n (
.7,guid.e = ,transcrip;n ,us+ ! ,neme?
,code )9 ,,ueb ,3texts.'4
  ,z ) all ,,bana publica;ns1 ? mat]ial
is 9t5d$ to 2 us$ 9 xs 5tirety4 ,^!
mat]ials may 2 duplicat$1 b n alt]$4

               ,,backgr.d

  ,! .7,brl ,code = ,*emical          #a
,nota;n.' is bas$ on .7,! ,neme?     a#a
,brl ,code = ,ma!matics & ,sci5tific
,nota;n.'4 ,specific provi.ns = us+ brl
symbols = ! 3/ruc;n ( *emical nota;n s*
z bonds1 electron dots1 r+ /ructures1 &
>r[s1 >e \tl9$ 9 ! .7,brl ,code =
,*emical ,nota;n.'4 ,if tactile
illu/ra;ns >e us$1 .7,guidel9es & ,/&>ds
= ,tactile ,graphics.' m/ 2 foll[$ 9
prep>+ ! tactile graphics4 ,:5
transcrib+ *emi/ry1 biology1 & physics
texts1 to assure prop] =ma;n ( *emical
symbols & /ructures1 ref] to ! mo/ rec5t
$i;n ( ! codes & guidel9es z well z any
,,bana 8,guid.e0 docu;ta;n reg>d+ _! use
9 3junc;n ) ,,ueb4
--------------------------------------#b

            ,,front ,,matt]

  _7,special ,symbols ,page_' ,*emi/ry
,code symbols us$ 9 ! volume m/ appe> on
! ,special ,symbols page4 ,place !
symbols "u ! subh1d+ 8,*emi/ry ,symbols0
& li/ !m 9 brl ord] ac to ! rules (   #b
,,ueb4                               a#b

      ,example #a

    ,*emi/ry ,symbols
.=_3] ,horizontal s+le bond "<9clud+
  9dicators">4 ,dots #be may 2 rep1t$ 9
  ord] to a3ommodate labels or o!r
  symbols4

  _7,transcrib]'s ,notes ,page_' ,use (
! ,neme? ,code & ! ,*emi/ry ,code z well
z ! ,guid.e docu;ts m/ 2 cit$ on !
,transcrib]'s ,notes page z foll[s4
8,ma!matical 3t5t is transcrib$ ac to
.7,! ,neme? ,brl ,code = ,ma!matics &
,sci;e ,nota;n1 #aigb ,revi.n.'1
#bjjg-#bjae ,updates1 9clud+ ! .7,guid.e
= ,transcrip;n ,us+ ! ,neme? ,code )9
,,ueb ,3texts.' "<,approv$ ,april
#bjah">4 ,*emical symbols >e transcrib$
ac to ! .7,brl ,code = ,*emical ,nota;n1
#aiig.'1 9clud+ ! .7,provi.nal ,guid.e =
,*emi/ry ,nota;n ,us+ ,neme? 9 ,,ueb
,3texts.'40 ,if diagrams >e 9clud$    #c
9 ! transcrip;n1 al 9clude !         b#b
foll[+ /ate;t4 8,tactile graphics >e
pres5t$ ac to ! .7,guidel9es & ,/&>ds =
,tactile ,graphics1 #bjaj.'40 ,&1 if a
,graphic ,symbols page is 9clud$1
8,graphic symbols us$ "?\t ? volume >e
%[n on ! ,graphic ,symbols page1 brl
page t.-40
















                                      #d
    ,,,neme? code swit* 9dicators,'   #c

  ,n>rative text is transcrib$ 9 ,,ueb4
,:5 x is det]m9$ t te*nical nota;n %d 2
pres5t$ 9 ei ,neme? ,code or !
,neme?-bas$ ,*emi/ry ,code1 a swit* is
requir$4 ,neme? ,code swit* 9dicators >e
us$4 ,see .7,guid.e = ,transcrip;n ,us+
! ,neme? ,code )9 ,,ueb ,3texts.' =
guid.e on :5 to swit* & = usage & spac+
( ! 9dicators4

.=_% ,op5+ ,neme? ,code ,9dicator
  "<foll[$ by a space">
.=_: ,neme? ,code ,t]m9ator "<prec$$ by
  a space">
.=,' ,s+le-^w ,swit* ,9dicator

    ,swit*+ ,rules = ,*emical ,,symbols
  ,a swit* to ,neme? ,code is requir$ :5
a *emical ele;t ,,symbol o3urs )9
n>rative text4 "<,,symbol is def9$ 9
,sec;n #c4e ( ! ,*emi/ry ,code4"> ,foll[
,neme? ,code rules reg>d+ use or nonuse
( ! ,5gli%-lr 9dicator4               #e
                                     a#c
      ,example #b
  ,! symbol = c>bon is _% ;,c _:2 =
iod9e1 _% ;,i _:2 = silv]1 _% ,ag _:2 &
= brom9e1 _% ,br _:4

      ,example #c
  ,sodium *loride1 or _% ,na,cl _:1 has
a _% #1 "1 #1 _: ratio ( sodium &
*loride ions4
--------------------------------------#d

      ,example #d
  ,! sodium cation is 9dicat$ z
_% ,na^+ _:4

      ,example #e
  ,! molecul> =mula = wat] is _% ,h2,o
_:4

      ,example #f
_% ,c,h4+2,o2 $o ,c,o2+2,h2,o _:


                                      #f
      ,example #g                    a#d
  _% ,fe(,,ii) ,'& ,fe^,,ii _: >e o!r
ways to notate ! f]r\s ion _% ,fe^2+ _:4

    ,swit*+ ,rules = ,*emical ,^ws
  ,)9 n>rative1 "ns ( *emical comp.ds
may 2 transcrib$ 9 ,,ueb un.s symbols
associat$ ) ! ^w require a swit* ac to !
.7,guid.e = ,transcrip;n ,us+ ! ,neme?
,code )9 ,,ueb ,3texts.'4
  ,! pres;e ( a gr\p+ symbol associat$ )
a *emical ^w does n require a swit* to
,neme? ,code4

      ,example #h
copp]"<,,ii"> oxide
--------------------------------------#e

  ,a hyph5at$ expres.n requires a swit*
to ,neme? ,code if x 3ta9s a "* or
symbol f ! ,neme? ,code4



                                      #g
      ,example #i                    a#e
  ,,gdp is a guanos9e
_% #5'-diphosphate _: sodium salt4
      .7,! pres;e ( a prime sign
    requires a swit* to ,neme? ,code4.'

      ,example #aj
_% #1,#4-addition _:
      .7,nota;n us+ an unspac$ comma
    requires a swit* to ,neme? ,code4.'

      ,example #aa
_% #3-chloro-#2,#3-dimethylbutanoic _:
acid  .7,nota;n us+ an unspac$ comma
    requires a swit* to ,neme? ,code4.'

      ,example #ab
a _% .b-keto _: e/]
      .7,a ,greek lr requires a swit* to
    ,neme? ,code4.'

  ,:5 a *emical ^w c>ries a sup]script1
9clude ! ^w 9side ! swit*es4

                                      #h
                                     b#e
      ,example #ac
_% copper^,,ii _: sulfate
--------------------------------------#f

    ,type=m
  ,reta9 type=m = *emical a2revia;ns1
acronyms1 *emical gr\ps1 & 3c5tra;n (
solu;ns z expla9$ 9 ,sec;n #i ( !
,*emi/ry ,code4

      ,example #ad
444 ": _% molality (.;m)
.k ?moles solute/kg solvent# _:4

  ,9 n>rative 3text1 italic type=m ( a
*emical t]m does n require a swit* to
,neme? ,code4

      ,example #ae
  ,table #ah4a summ>izes ! .2;n-alkanes
"? decane1 : 3ta9s #aj c>bon atoms4


                                      #i
      ,example #af                   a#f
  ,! .1trp,r op]ator has ?ree *anges 9 !
_% #5',c,t,a,g-#3' _: half-sites4

  ,except = italics1 type=ms t h
ma!matical or *emical m1n+ require a
swit* to ,neme? ,code4

      ,example #ag
  _% @",d-glucosamine _: is made
naturally 9 ! =m (
glucosam9e-#f-phosphate4
--------------------------------------#g
      .7,! small capital lr type=m
    9dicator is specific to ! ,*emi/ry
    ,code & s m/ 2 li/$ on ! ,special
    ,symbols page4.'

    ,*emical ,a2revia;ns & ,acronyms
  ,:5 a *emical a2revia;n or acronym
appe>s 9 n>rative 3text1 code swit*+ is
n requir$ un.s x 3ta9s a "* or symbol f
! ,neme? ,code4

                                     #aj
      ,example #ah                   a#g
  ,v>ia;ns 9 ,,dna >e call$ s+le-
nucleotide polymorphisms or ,,snp,'s4

      ,example #ai
  ,,rn,'ase ,a is a small prote94

      ,example #bj
  ,,rna,'se ;,h br1ks d[n ,,rna
molecules4

  ,:5 a *emical a2revia;n or acronym
appe>s 9 te*nical 3text1 foll[ ,neme?
,code rules reg>d+ capitaliza;n1
punctua;n1 & spac+4 ,capitalize lrs
9dividually4

      ,example #ba
_% t,r,n,a^,his _: matura;n
--------------------------------------#h

      ,example #bb
_% glucose+2,n,a,d+"+2,p;i"+2,a,d,p
$o #2pyruvate+2,a,t,p+2,n,a,d,h+2,h2,o
_:                                   #aa
                                     a#h
    ,spatial ,diagrams ( ,molecul>
    ,/ructures
  ,9 spatial diagrams ( molecul>
/ructures 3ta9+ oblique bonds or *emical
>r[s o!r ?an yields >r[s or equilibrium
>r[s1 tactile "<rais$ l9e"> repres5ta;n
is pref]r$ ov] ! use ( brl symbols4
,foll[ ! directives giv5 9 ! mo/ rec5t
$i;n ( .7,guidel9es & ,/&>ds = ,tactile
,graphics.' reg>d+ te*niques1 l9e /yles1
spac+1 & ! cr1;n ( a ,graphic ,symbols
page4
  ,:5 rais$ l9es >e us$ 9 a molecul>
diagram1 all bonds & >r[s 9 ! /ructure
>e to 2 drawn4 ,ele;t ,,symbols1
electron dots1 & ma? symbols m/ 2
depict$ z brl symbols4 ,! ,5gli%-lr
9dicator is omitt$ = s+le-lr ,,symbols 9
a tactile graphic4
  ,a swit* to ,neme? ,code is requir$ :5
! diagram 3ta9s ma? or *emi/ry symbols4
,assum+ ^! examples >e 4play$ to
n>rative1 ! left m>g9 is cell #c ac to
,neme? ,code rules4 ,code swit*      #ab
9dicators >e 9 cell #a4              b#h
--------------------------------------#i

      ,example #bc
_%

  ethene

  ,h         ,h

     ,c   ,c

  ,h         ,h

_:    @.<,tactile graphic w %[ s+le &
    d\ble bonds z rais$ l9es4 ,! two
    _% ,c_'s _: >e 3nect$ ) a horizontal
    d\ble bond4 ,ea* _% ,c _: has two
    oblique s+le bonds to an
    _% ,h _:4@.>




                                     #ac
      ,example #bd                   a#i
_%

  ,,water


     ? ?
     ,o

  ,h    ,h

_:    @.<,tactile graphic w %[ two s+le
    bonds z rais$ l9es1 2t _% ,o _: &
    ea* ( two _% ,h_'s _:4@.>
-------------------------------------#aj

  ,a molecul> /ructure 3ta9+ only /rai<t
v]tical or horizontal bonds & only
yields or equilibrium >r[s may 2 depict$
5tirely ) brl symbols or z a tactile
graphic4 ,me?ods m/ n 2 comb9$ 9 ! same
diagram4


                                     #ad
      ,example #be                  a#aj
_%

     ,o   ,h
     __    _
 
  _3],c_3],n_3]

_:

      ,example #be1 ,,alt]nate ,,depic;n
      @.<,! lay\t ( ! brl ,,symbols is
    %[n 2l4 ,spac+ is res]v$ = a tactile
    graphic : w %[ !  v]tical d\ble bond
    & ! f\r s+le bonds z rais$ l9es4 ,!
    leftmo/ s+le bond l9e w 2g9 9 cell
    #c4 @.>

_%

    ,o   ,h

    ,c   ,n

_:                                   #ae
                                     #aa
  ,if ! diagram does n 3ta9 ma? or
*emi/ry symbols repres5t$ z brl symbols1
a swit* to ,neme? ,code is n requir$4

      ,example #bf
      @.<,a tactile graphic ( a b5z5e r+
    w foll[ ! label %[n 2l4 ,2c a swit*
    to ,neme? is n ne$$1 ! label is 9
    ,,ueb1 ) 3trac;ns4 ,! draw+ w 2 a
    hexagon %ape4 ,?ree sides w 2 a s+le
    l9e2 ! alt]nate ?ree sides w 2 a
    d\ble l9e4@.>

  b5z5e








         @.<,,,5d ( docu;t,'@.>
                                     #af