fix

src/widgets/send-modal/ui/SendModal.tsx

@@ -14,6 +14,9 @@ export interface SendModalToken {
   /** Network this balance row belongs to. Tickers repeat across chains
    *  (USDT on ETH/SOL/TRX/…), so the "Макс" lookup must match on it too. */
   chain?: Chain
+  /** Token decimals (from the balance endpoint), used to convert the human
+   *  send amount into base units before submitting. */
+  decimals?: number
 }
 
 interface Props {
@@ -83,6 +86,11 @@ export function SendModal({ open, onClose, network, tokens = [], initialToken =
   }
   const maxAmount = maxSendable()
 
+  // Decimals used to scale the human amount into base units before sending.
+  // Native comes from chain config; tokens carry their own decimals from the
+  // balance row. Undefined ⇒ we can't safely convert, so the send is blocked.
+  const sendDecimals = isNative ? cfg.nativeDecimals : walletMatch?.decimals
+
   useEffect(() => { setSelectedToken(initialToken) }, [initialToken])
   useEffect(() => { setSelectedToken('') }, [network])
 
@@ -115,7 +123,8 @@ export function SendModal({ open, onClose, network, tokens = [], initialToken =
   }
 
   function handleSubmit() {
-    const convertedAmount = isNative ? toBaseUnits(amount, cfg.nativeDecimals) : amount
+    if (sendDecimals == null) return
+    const convertedAmount = toBaseUnits(amount, sendDecimals)
     mutation.mutate({
       chain: network,
       to: address,
@@ -300,7 +309,7 @@ export function SendModal({ open, onClose, network, tokens = [], initialToken =
         <button
           className={styles.submitBtn}
           type="button"
-          disabled={mutation.isPending}
+          disabled={mutation.isPending || sendDecimals == null}
           onClick={handleSubmit}
         >
           {mutation.isPending ? 'Отправка…' : 'Отправить'}

src/widgets/token-table/model/tokens.ts

@@ -17,6 +17,9 @@ export interface Token {
   chain?: Chain
   /** Numeric USD value of the holding — used for sorting and per-network subtotals. */
   usdValue?: number
+  /** Token decimals from the balance endpoint — used to convert a human send
+   *  amount into base units. Absent for the static placeholder catalog. */
+  decimals?: number
 }
 
 export const TOKENS: readonly Token[] = [

src/widgets/token-table/model/useChainTokenRows.ts

@@ -55,6 +55,7 @@ function nativeRowFor(chain: Chain, native: FormattedAmount): Token {
     bal: truncateDecimals(native.formatted),
     usd: formatUsd(native.usdValue),
     usdValue: native.usdValue,
+    decimals: native.decimals,
     fav: false,
   }
 }
@@ -73,6 +74,7 @@ function tokenRowFor(chain: Chain, symbol: string, amount: FormattedAmount): Tok
     bal: truncateDecimals(amount.formatted),
     usd: formatUsd(amount.usdValue),
     usdValue: amount.usdValue,
+    decimals: amount.decimals,
     fav: false,
   }
 }